Robert Kubica's large crash at the Canadian Grand Prix resulted in the season's first driver change. Although Kubica passed the medical examination and did not seem to show any ill effects, the FIA medical delegate decided it would be best to rest him for the weekend, and not risk a second impact at the circuit - so famous for its high speed crashes. This was a precautionary measure - another concussion so close to the previous one could be dangerous. He was replaced in the BMW Sauber team by Formula Renault 3.5 Series championship leader, 19-year-old GermanSebastian Vettel, who made his Formula One debut at the Indianapolis circuit.
Friday's morning practice was dominated by McLaren and BMW Sauber, with Fernando Alonso putting in the fastest time. Sebastian Vettel started his first race weekend with a fourth fastest time. Ferrari, who expected that their pace would return at Indianapolis,<ref name="Massa: Ferrari poised... Read More