A lot of people, including me, would want to know that the STOP button works. Ideally, the car would pull off the traveled portion of the road, before completely shutting down.
What happens when you slam your hand on that button and you are traveling at 85 mph. Oh wait, it’s electric, okay what happens when you slam you hand on that button and you are traveling 25 mph?
Can the drivers behind you respond in time?