Speaking at the official press conference on Thursday, Felipe Massa revealed that he will test for two teams at this week's test at Monza. On Tuesday and Wednesday he will be on duty for Ferrari, for whom he will be racing in 2006, while on Friday he will be back in action for Sauber.

Naturally, this news has worried Sauber's tyre supplier, Michelin, however, the French tyre manufacturer's Head of Motorsport, Pierre Dupasquier is adamant that the Brazilian will not be in a position to pass information to its rivals.

"Our problem is for a Michelin driver not to help our competitor," he told Reuters. "Since Monza is the last test for Sauber and Michelin, and since he will test with Ferrari before running with Sauber, it's easy for us to manage for him not to have an indication to pass to our competitor for next year.

"We trust him obviously," added the Frenchman. "But at the same time we don't want to give any possible potential help to our competitor.

"He will run the car the way he wants to run it," he continued, "but he will have no indication on the tyres. We'll be fair to him, not to prevent him doing things, and at the same time be fair to Sauber."