This gave way to mass-produced models like the Taco Mini Bike, Rupp, Bonanza, and others in the 1960s. These were a blast to ride, but were only ever for recreation off-road. That would change with ...

After the success of his go carts, Rupp pivoted into mini bikes, producing several models for two decades, including the Roadster, Scrambler, Enduro, Sprint and Chopper. The Black Widow rolled out in ...