Cyril Dumont, Renault: I have mixed feelings today. It was a good recovery from Mark, who was 14th after the second corner incident with Lewis, so a great recovery from him. For Sebastian, it was a more straightforward race, but unfortunately he made a small mistake at the end. But, in the Championship, it's still a very good result for him, he started the race 58 points ahead of Hamilton and now he's 60 points ahead of Button, so it's good for him. For the team it's also a good result, as we got more points than all the others.

"After a spell of torrential rain that made the circuit undriveable and triggered a lengthy red flag period, the race restarted with Jenson in 21st place. It soon became apparent that his car was in good shape, but what followed almost defied credence. In fact I think I've heard the word 'unbelievable' shouted at me by joyful colleagues about a hundred times this afternoon, and in truth Jenson's drive was exactly that: absolutely unbelievable. Other adjectives that spring to mind are 'heroic', 'majestic', 'magnificent' and 'superb'!

"The boys did a great job too - they performed six pitstops for Jenson alone, in difficult conditions, under enormous pressure - and this dramatic win underlines the extraordinary team spirit that exists within Vodafone McLaren Mercedes.

"Our car's race pace has been consistently strong in Montreal today, in Monte-Carlo two weeks ago, and in Barcelona a week before that; next we'll go on to Valencia, where we'll be hoping to build on this victory and that consistent baseline of competitive speed.

"Lewis had a frustratingly short race, which ended when he and Jenson made contact at the beginning of the start-finish straight. We took the decision to ask him to stop his car on the track, and our post-race inspection revealed that that was the correct choice: his suspension was damaged to such an extent that it would have been impossible to continue.

"In our view it was just a racing incident, and both Lewis and Jenson share that view. So did the FIA stewards, who did an excellent job in tricky conditions today. Sometimes an accident is no-one's fault, and this was one of those occasions.

"Like Jenson, Lewis is already looking forward to Valencia, where I hope and expect that MP4-26, and both its drivers, will be capable of scoring another win. Bring it on!"

Stefano Domenicali: Regret is the feeling affecting all of us at the end of a chaotic Canadian Grand Prix. Today we had the potential to fight for the win, but everything that could go wrong did go wrong. In the end, Felipe's sixth place is definitely a result that is hard to swallow given how the race ended. Two incidents in particular - the collision between Fernando and Button and the passing move on Karthikeyan that caused Felipe to go of the track - leave a bitter taste in the mouth. Now we must put this Sunday behind us, while retaining the fact that our performance level was a match for the situation, just as we had seen two weeks ago in Monaco. We must do it again starting in Valencia and then improve for those races - I'm thinking above all of Silverstone - where aerodynamic efficiency will count for more and maybe the new interpretation of the regulations concerning the exhausts could change the pecking order in the field.

Pat Fry: You could say that was a pretty chaotic race, from which we did not come away with what was within our capabilities. Events definitely did not do us any favours, starting with the weather: today, also given what we had seen in qualifying, we could have fought for the win even in dry conditions In the first part of the race, the drivers were getting a different feel from their cars: for Fernando the intermediates were quicker and that is what led to the decision to bring him in to fit them. Then it began raining harder and the red flag followed. It was a lottery and our numbers did not come up, that's for sure. Now we must look ahead and put this race behind us as quickly as possible, without letting it get us down. The team worked well in what were very difficult conditions. From a performance point of view, this weekend we saw that the gap to the quickest seems to have been reduced. Unfortunately, we did not reap the benefits of that on today's results sheet. We must look ahead and try to continue down this route of improving the car: sooner or later the results will come.

The race featured a total of seven Safety Car periods, including the race start and restart. Both drivers made a total of four stops during the race: two before the red flag stoppage, and two after the restart. The team pitted both drivers for intermediates during the first part of the race, just before heavy rain hit the circuit. This forced them to pit again for wet tyres, leaving Nico in P11 and Michael in P12 when the race was red flagged. Michael climbed from P12 at the restart to finish P4 and ran second for 11 laps before being passed by Button & Webber. Nico was in a points-scoring position but damaged his front wing after contact with Kobayashi on lap 66, and lost the wing on lap 70.

Ross Brawn: "After our intermediate tyre strategy during the first part of the race didn't work out, we were looking a little stranded in 11th and 12th positions when the race was red flagged, but we recovered the situation well. Michael stopped for intermediate tyres on lap 34 when the Safety Car came in, which enabled him to gain a number of positions, and Nico did the same two laps later. It was a thrilling race and Michael drove beautifully in the second part; he did a strong job on the intermediates and the option tyres, but was unable to hold off Jenson and Mark's faster cars, particularly when they had the use of DRS. Even so, it was a fantastic drive to climb eight places and finish fourth. Nico had a more difficult time: he got hit by Sutil, but climbed back from that and looked set for a solid points finish until he lost his damaged front wing on the final lap which left him in 11th place. Overall, it was an exciting and extremely challenging but ultimately positive race for our team."

Norbert Haug: "This wasn't just a Grand Prix - it was like an action movie. First of all, congratulations to Jenson and McLaren Mercedes for coming from last to first position and posting the 75th win with a Mercedes engine since our first victory in the modern era at Melbourne in 1997. Michael drove at his best today; he ran second for a long time and he was the fastest man in the field on intermediates. He ultimately finished fourth, just 0.3s from the podium, which is a very respectable result. The team worked very hard over the weekend and Michael extracted everything possible from the car; our sincere compliments to him for this drive. Nico was hit from behind on the restart after the red flag, and would have brought his slightly damaged car home in the points until, after contact, he lost his front wing on the last lap. Michael's result is a good reward for our team's hard work in the past weeks and we will build on it. His drive contributed a lot to a remarkable race, which gave fantastic entertainment to the spectators here in Montreal who waited so long for the restart, as much as for the television viewers worldwide. This was motor racing at its best."

LRGP remains fourth in the Constructors' Championship with 60 points. Thanks to his performance today, Vitaly climbs to seventh in the Drivers' Championship with 31 points - just one point off Felipe Massa and two points ahead of Nick. Vitaly had the third quickest lap of the race behind Jenson Button and Sebastian Vettel. With 1,435 kilometres run this weekend, LRGP was the second most consistent team behind Mercedes GP.

Eric Boullier, Team Principal and Managing Director: "Once again, the team scored points today, which means we've finished in the top 10 with at least one car at every race since the start of the season. We've also understood some of our recent problems, and the solutions we brought with us to Montreal were promising because our pace has clearly improved. This said, despite all these positives, we leave Montreal with mixed feelings. Firstly, we could have scored points with both cars today. Unfortunately, Nick was caught out by Kamui Kobayashi, who was unusually slow on exit. Until then, his race had been perfect. With a bit more luck, Vitaly could have finished a bit higher too."

Alan Permane, Chief Race Engineer: "A very eventful afternoon. We felt we were a little bit unfortunate to only come away with fifth place to be honest. We judged it right in the first part of the race when other teams were stopping for intermediate tyres, but we could see there was a lot of rain coming so we stayed out on our extreme wets. Unfortunately Nick had a tussle with Kamui (Kobayashi), lost his front wing which put him out of the race and then Vitaly drove a solid race to come home fifth. We were definitely looking to get two cars into the points so could have been better from that point of view."

Ricardo Penteado, LRGP Engine Support Leader, Renault Sport F1: "A really busy race for everyone and almost impossible to sum up in just a few words. A good result for Vitaly to secure fifth position and some more points, which will be very important for the constructors' championship as Mercedes got a strong finish here. We went very aggressive with his fuel strategy, counting on the rain to throw up a lot of different possibilities, and we were very, very tight at the end. After a precautionary engine change for Nick last night, it was looking good in the race and a shame he could not get the points he deserved. All the same, both cars were very competitive throughout the whole race and it will give us confidence going back to Europe for the next event.

Sam Michael, Technical Director: After an incident-packed race it was good to score a couple of points. The first safety car deployment hurt our decision to put both cars on intermediate tyres that were working out really well. After the long race suspension, the calls to switch to intermediates and then dry tyres were spot on to put both cars into the points. We then had some issues on the re-start that meant we dropped back in the order.

Vijay Mallya, Chairman and Team Principal: "A very long and eventful afternoon of racing where we didn't realise our potential. We had a very quick car and both drivers were competitive, but the circumstances of the race did not go our way. Both drivers picked up damage to their front wings, without which I'm confident we could have come away with a double-points finish because the strategic calls from the pit wall were very good today. We will now go away and analyse our approach to the race so that we can come back stronger in Valencia"

Peter Sauber, Team Principal: "This weekend started really badly for us with Sergio not being able to race for health reasons. However, going into the race from P13 and P17 and scoring six points is quite an achievement we can be proud of. Nevertheless there is also a slight disappointment because after the re-start we hoped for more. But circumstances didn't help us. Congratulations to Kamui for a great race, and a big thank you to Pedro for all his efforts."

James Key, Technical Director: "Overall this has been a pretty tough weekend with mixed fortunes. After some difficult practice sessions we hoped for a better showing in the race, and overall that's what we got. Both drivers did well at the beginning of the race to make progress. It was a good call from the drivers and the team to initially stay out and gain some positions. Kamui held his positions pretty well after the re-start, and all looked fairly reasonable on wet tyres. The change to intermediates went pretty well for Kamui, but I think safety cars and the dry conditions in the end put us at a slight disadvantage with some quicker cars coming from behind, and Kamui couldn't really defend against some of them. Sadly we ended up seventh. There was the potential for a better result, but then we can't complain because we started further back. Overall Kamui did a fantastic job keeping it all together under pressure. To get piped by a couple of hundredths at the line in the end was rather unfortunate, but we collected six points. Pedro was looking okay, but then he had some front wing damage which unfortunately dropped him back a bit just outside the points. Otherwise he drove a solid race, and we thank him a lot for getting into the car at short notice and racing well."

Mike Gascoyne, Chief Technical Officer: "After a very strong weekend that was not the sort of race we wanted to have. We lost a number of places after a problem in the first stops and then unfortunately Heikki had a driveshaft failure after the race restarted. Jarno has been strong all weekend and put in a fine drive this afternoon. He was able to pick up all the places he lost after the first pitstop and would have had a strong finish, but when he came in for the second time the front inerter failed and dropped down around his feet in the cockpit . We considered retiring the car but Jarno did an awesome job to not only bring the car to the end but also to catch the cars in front of him. He nearly passed them in the last couple of laps, despite the very large handicap he had, so sincere thanks to him for keeping his foot down in what was a very difficult situation. Despite all that, we did have a strong weekend in terms of the car's performance so while that was not the best race we will ever have, I think we can see it as another stepping stone in the development of the team."

Tony Fernandes, Team Principal: "Honestly, that was a bit of a disappointing day for us. We had a mix up at the first pit stops and we struggled to improve from there in a race that could have provided some exciting opportunities for us. It is important that we see this as another part of our development and learn from the experience this weekend. However, there are a number of positives to take away from here - our performance in qualifying was excellent and Jarno put in an excellent drive this afternoon, and all weekend, so now we move on to Valencia where I am sure we will put this race behind us and keep moving forward."

The Marussia Virgin Racing team once again brought both cars home, with Jerome d'Ambrosio and Timo Glock classified 14th and 15th. During the race both drivers were fighting for position with cars from several teams and were able to avoid any contact in the often chaotic conditions.

The team initially benefited from the wet set-up chosen earlier in the weekend, but ultimately in the drying conditions the resulting lack of top speed, coupled with worn and flat-spotted tyres, left both drivers unable to defend their hard-earned positions.

John Booth, Team Principal: "An eventful race to say the least and one that initially looked to be playing in our favour given the level of downforce we had chosen to run. With Timo we held our nerve during the first part of the race, waiting for the rain that was obviously coming on the radar as we felt that a stop for intermediate tyres would have been costly. This proved to be the case with Timo being 15th at the restart. The second part of Timo's race initially didn't go well, with him losing places when we stopped for intermediates, however with the stops for slicks he managed to get back past Trulli. Unfortunately, during the final safety car period, we noticed in the data a flat-spotted tyre and we advised Timo but given his position we needed to try to race to the end as a pitstop would have dropped us to last. Jerome had quite an eventful race - starting last and finishing 14th. He did a good job considering the events of the weekend. We used him at times to try out strategies with intermediates and even with this he managed to achieve a good result. All credit to him."

Button passed Red Bull Racing's Sebastian Vettel on the final lap to win the race, despite a collision with his team mate, a drive-through penalty, and five pit stops: which at one point in the race put the Englishman as low as 21st. Nonetheless, the correct strategy calls in the constantly changing conditions - as well as a fantastic drive - enabled him to win one of the most action-packed races of the year.

The race began in wet conditions behind the safety car for the first four laps, which meant that all the cars started on the PZero Orange full wet tyres: the first time that this has happened all year. Button was the first person to switch to the PZero Blue intermediate tyres on lap eight, giving the Italian intermediates their competition debut.

But the rain returned just over half an hour after the race started, bringing out the safety car. Shortly afterwards, on lap 24, the race was red-flagged as conditions were undriveable. According to the rules, teams were allowed to change tyres and work on their cars while they waited for racing to resume.

The race restarted behind the safety car nearly two hours later, once again on the PZero Orange tyres. As conditions dried out, the leading runners moved onto intermediate tyres, then slick tyres. Button made a final stop for the PZero Red supersoft tyres on lap 51 to win the race by 2.7 seconds, having taken full advantage of one more safety car period with just 12 laps to go.

Vettel - who led every lap apart from the final one - finished second on the PZero Red supersoft tyres after three stops, while his team mate Mark Webber was third. The final eight laps saw a frenetic battle for the podium places, with Vettel defending from Button, Webber and Mercedes driver Michael Schumacher, before making a rare mistake.

Paul Hembery: "This was one of the most thrilling and unpredictable grands prix we have seen so far this season, with an amazing drive from Jenson Button and all three podium places decided on the very final lap. We finally got a wet race, which showcased the effectiveness of our PZero Orange full wet and also the PZero Blue intermediate tyre. Once the race re-started, it was very interesting for us to run the wet and intermediate tyre down to the crossover point, which we've never done before in competition: this proved to be a key point in the strategy as both Button and Vettel showed. We really enjoyed watching Kamui Kobayashi as well who delivered a fantastically spirited drive in a race that was well worth the wait: the final battle for the podium was definitely one of our highlights of the year so far."