Two new Grand Prix cars made their debut at Mosport Park, The Roger Penske PC1 (No. 66) driven by Mark Donohue into 12th place, and the Maurice Phillippedesigned Parnelli (No. 55) which former Ferrari team member Mario Andretti drove into seventh position. Below, Peterson’s Lotus 72 keeps ahead of Tom Pryce in his UOP Shadow while (top right) James Hunt’s Hesketh laps Eppie Wietzes’ hired Brabham BT42. On the right a scenic shot shows Regazzoni’s Ferrari leading a
Sliding Jody Scheckter (Tyrrell) and Donohue’s Penske.