You don't really have to. If the default state with the accelerator released is to regen at a reasonable rate, the car remains very controlable. That's the wa

You don't really have to. If the default state with the accelerator released is to regen at a reasonable rate, the car remains very controlable. That's the way all Teslas work by default. So the car slows down as you release the accelerator and you can use the brakes to stop faster as needed.