Leo Kinnuen clinches the Interserie Championship when he wins at the German Norisring in a Porshe 917/10 (1972).
3 Dario Resta dies in a crash during a speed record attempt at Brooklands, England (1924).
3 Jim McElreath wins the first California 500 at Ontario Motor Speedway in A.J. Foyt’s back-up car. Jim Hurtubise qualifies 33rd in a front-engined roadster (1970).
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