A number of A1 drivers continued their summer programmes with a busy weekend of racing.

In the fourth round of GP2, Nelson Piquet, Alex Premat, Nicolas Lapierre and Fairuz Fauzy were taking part in their second successive weekend of racing, this time at the Catalunya circuit just outside Barcelona. After a qualifying session that was turned on its head, Piquet started from pole, Premat second, Lapierre thirteenth and Fauzy 25th, after a number of drivers, including original pole sitter Lewis Hamilton and Lapierre had their fastest times taken away for not heeding yellow flag warnings.

At the start of the first race, Piquet and Premat held their positions, but after pitting, Premat emerged behind ART team mate Lewis Hamilton. Piquet lost the lead after suffering a drive through penalty for speeding in the pit lane which dropped him down the field. This left Hamilton in the lead, with Premat a close second. On the last lap, Premat dived past Hamilton, resulting in contact which sent his team mate into a spin. Hamilton recovered to take second behind Premat. Piquet, meanwhile managed to fight his way back up to fourth.

The second race was a much quieter affair. Piquet made a lightening start to move up from fifth to second while Premat followed him through the field, up to third from his eighth place grid slot. Positions remained unchanged at the front of the field, with the Piquet and Premat finishing a close second and third respectively.

Piquet leaves Spain at the top of the championship table, with Premat currently lying third, and Lapierre fifth.

Meanwhile, on the other side of the Atlantic, two of A1GP's younger stars were getting to grips with the new street circuit in Houston, in the second round of the Champ Car Atlantic series.

A1 Team Lebanon driver Graham Rahal showed he had the pace to challenge for race wins, starting the race from third on the grid and making it up to second halfway through the race. With only a few minutes to go, Rahal challenged for the lead, making contact with race leader Matos, which saw Rahal fall down the field with damaged suspension. A1 Team South Africa driver, Stephen Simpson also had a day to forget after a promising sixth row start. Simpson made contact with the wall on the opening lap, which effectively ended his race.