CLERMONT, IN - JULY 26: Al Unser (#2), race winner, in his Johnny Lightning Colt Ford leads Mario Andretti's STP McNamarra (#1), Swede Savage's Olsonite Eagle (partially hidden) and Mark Donohue's Sunoco Penske Lola Chevy (#68) during the USAC INDY 150 Champ Car Race held on the road course at Indianapolis Raceway Park (IRP) on July 26, 1970 in Clermont, Indiana. (Photo by Alvis Upitis)