Indy 500 1975

Bobby Unser flashes victory sign in winner's circle at Indianapolis Motor Speedway on May 25, 1975, after winning rain-shortened Indy 500-mile race in Indianapolis. Behind Unser in the Borg-Warner trophy, symbol of the traditional Memorial Day classic. It was the second Indy 500 victory for Bobby, whose average speed for 437.5 miles was 149.213 mph. (AP Photo)