On the eve of the 2009 F1 season, Jenson Button and Brawn GP shocked the sport. The team, which barely survived the previous winter after the withdrawal of owners Honda, arrived at the final pre-season test with a car that had never been driven at full racing speed before. Immediately, it was fastest of all. Jenson Button told Tom Clarkson about that test day, and why dominating the early stages of the 2009 season felt far from easy.
