Heading the list is the most dominant car in series history , the Roger Penske 1968 Sunoco Camaro developed .
Heading the list is the most dominant car in series history , the Roger Penske 1968 Sunoco Camaro driven by 1972 Indianapolis 500 Champion Mark Donohue .
Heading the list is the most dominant car in series history , the Roger Penske 1968 Sunoco Camaro developed and driven by 1972 Indianapolis 500 Champion Mark Donohue .