There is a most unusual conversion that turns an Audi A4 into a fitness machine. The FitCar PPV is pedal-powered but still said to reach the same performance as the real Audi, only that pedals connected to a flywheel activate the accelerator.
This way, drivers can get the full experience of riding the car, while maintaining the health benefits of riding a bike. The brake pedal was also replaced with a push hand control to keep the driver’s feet clear while pedaling. The designer stated that drivers can burn as much as 300 calories in a 30 minute drive.