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Empty racetrack at Ontario Motor Speedway / yellow Porsche 914 coupe races across / red Porsche 914 coupe racing / professional race car driver MARK DONOHUE wearing yellow Goodyear racing suit and sporting buzzcut flattop while smiling, talking with television broadcaster HUGH DOWNS wearing blue racing helmet, dark sunglasses and white racing suit and driverteam owner ROGER PENSKE wearing red shirt / DEAN PAUL MARTIN (son of Dean Martin) sporting shaggy blonde hair, graded sunglasses, white Firestone racing suit while walking along racetrack during pre-race with professional race car driver ROGER WARD wearing white Firestone racing suit and yellow straw cowboy hat, talking with various people, stopping at parked Porsche 914. OMS Celebrity Pro-Am on August 09, 1970 in Ontario, California (Footage by Getty Images)