CLERMONT, IN - JULY 26: Mark Donohue leans on the jack handle supporting his Sunoco Penske Lola Chevy as eventual race winner Al Unser (right) checks the competition before the start of 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)