The Freecross is a fitness device and vehicle created by skier Wolfgang Haupt in collaboration with Porsche Engineering. The Freecross uses riders' arm and leg motions to deliver power to the rear wheel via a bicycle-style chain drive.
Steering is accomplished by leading to one side or the other, as is the case with skiing. The Freecross is fitted with a continuously variable rear hub transmission that allows users to gear up or down, while braking ability is provided by disc brakes in the front wheels and a roller brake in the back.
The arm levers of the Freecross can be adjusted up or down to suit the rider's height, and also fold down for easy storage and transportation.