123Movies. Taking racing fans back to the dawning of the age of America's dominance in the global motocross arena, this long-buried film from director Charles Bush documents the 1975 American Motocross Association's 500cc Nation Series. It came down to five riders -- Jim Weinert, Steve Stackable, Pierre Karsmakers, Billy Grossi and Kent Howerton -- in what became known as the Battle of New Orleans, a legendary moment in motocross history.