Today in Off-Road History: June 22, 1980 // 500cc USGP of Motocross at Carlsbad

For nearly a decade, the United States Grand Prix of Motocross had been dominated by European riders since first coming to Carlsbad Raceway. That all changed one fateful day in 1980 thanks to privateer rider Marty Moates. Check out the original ABC Wide World of Sports broadcast of the race!