each in a different decade (1967, 1978, 1984). To this day, he's the only driver to win a Daytona 500, Indy 500 and Formula One world title.

Sir Jackie Stewart driving the 1966 Lola-Ford T90 he drove in the 1967 Indy 500, and Al Unser, Sr. right next to him in a similar car. The most bizarre car in the group had to be the 1960 Milliken ...

Only person to be named Driver of the Year in three decades -- 1967, 1978 and 1984. Only driver to win the Daytona 500, Indy 500 and Formula One world title. Four-time Indy car national champion.