"The FitCar PPV ‘prototype #2’ is based on a standard Audi A4 Avant 2.0L petrol TFSI auto, with the throttle replaced by a bicycle pedal mechanism and mated to a flywheel, which generates and electronic pulse to engage the accelerator. The car is powered as normal, delivering manufacturer specification performance and economy, governed by an active pedalling motion instead of the conventional depressing of the accelerator."