When I was a kid, I had an old guy showing me how simple it is to drive a car, while he was driving, I was in the back seat looking as he said, "It's easy, you have the steering wheel to steer, the accelerator to go, and this pedal is the braaa......." Smashed into the back of a parked tractor trailer. Hit the wheels and bounced back. Guy in the rig came out and asked if we were ok,