1973: Rain delayed the start of the race, and at the start, a massive crash involving Salt Walther halted the race. Rain fell again, and two days later, the race finally got underway. Mario Andretti completed only 4 laps and dropped out with a bad piston. He placed 30th. Incidentally, Andy Granatelli, Mario's previous car owner, was the winning co-owner along with Pat Patrick. Andretti would later drive for Patrick in 1981-1982.