Clifford A. "Sonny" Vaughs was an American civil rights activist, filmmaker, and motorcycle builder. Vaughs designed the two chopper motorcycles used for the 1969 film Easy Rider, while an associate producer on the film. He also produced and directed the documentary What Will the Harvest Be? (1965) and Not So Easy (1972).

Easy Rider is a 1969 American independent road drama film written by Peter Fonda, Dennis Hopper, and Terry Southern, produced by Fonda, and directed by Hopper. Fonda and Hopper play two bikers who travel through the American Southwest and South, carrying the proceeds from a cocaine deal. The success of Easy Rider helped spark the New Hollywood era of filmmaking during the early 1970s.