Mark Donohue and Roger Penske ... Donohue headed back to America to drive his “Can-Am Killer,” the Porsche 917/30 that he drove to his 1972 Can-Am title, around Talladega Superspeedway ...
Motorsport Images Following the 1973 domination by Mark Donohue’s turbocharged Penske-run Porsche 917/30, fuel restrictions were put in place for 1974, but Oliver concedes the cars were becoming ...