4. The Cadillac
One more bike on this list that comes from the American Chopper: Senior vs. Junior spin-off is the Cadillac. It is another motorcycle made by junior as he competed against his father in who was going to make a better chopper based on the carmaker Cadillac. The fans voted for the better one, but both Cadillacs were auctioned off to raise money for charity Cure Duchenne.