[DGthe3]

Every car comes with a built in driver controlable, infinitely variable, torque modulation device. It allows you to control the approximate percentage of an engines maximum torque from near 0 to 100%. It is called the 'accelerator pedal'. Leave your foot off it, and the car will produce enough torque to keep itself running. Push it all the way to the floor, and the engine will give you all the torque that it can. Most drivers back off on the accelerator when they notice that they are spinning their wheels and do not need a separate input system to control their engine.