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Race car driver SAMMY SESSIONS wearing racing suit, helmet while talking with man at Indianapolis Motor Speedway; Sammy Sessions squeezing into racer / Indy racer 9 being pushed from pit / Gilmore Racing crew pushing Indy racer 14 (AJ Foyt's car) / race car driver MARIO ANDRETTI in racing suit / track crew sweeping liquid from track / Mario Andretti wearing racing helmet and suit, donning gloves while standing beside Viceroy Indy racer 11; CU Andretti in racer; Andretti steering racer from pit / Mario Andretti steering Indy racer 11 into pit; Andretti squeezing out of race car / crowd of predominantly white children passing cam / pit crew pushing Indy race car / pit crew working on Indy race car 5 / race car driver AJ FOYT chatting with man on track / race care driver BOBBY ALLISON sitting in Indy racer; Bobby Allison and Sunoco Indy race car 12 being pushed from pit / Bobby Allison steering Indy racer 12 into pits; Allison (no helmet) sitting in racer, talking with crew; Allison getting out of car. Indianapolis 500 Pre Race on March 28, 1973 in Indianapolis, Indiana (Footage by Getty Images)