1. Steve McQueen
As great as Newman was, McQueen legitimately had what it took to be a top-flight professional driver. He enjoyed racing dirt bikes and competed in grueling endurance races like the Baja 1000.** More impressively, however, he won his class in the 12 Hours of Sebring, co-driving with F1 driver/Revlon heir Peter Revson, and nearly beat Mario Andretti for the overall win in the process. Legend has it that he was all set to co-drive with Sir Jackie Stewart at Le Mans, but that the studios threatened to pull all funding for his eponymous movie about the race if he competed, which is a shame.