Just hope the guy behind you has brakes that are better or as good as yours, ask my wife how she knows this fact. $3800 later and her car gets out of the shop on Tuesday. She drives an E39, the model she drives has what's called Dynamic Braking. If the computer senses a panic stop, such as a hard jab to the brake pedal, 10 times the pressure is added by the brake system to help stop the car.....RIGHT NOW. Trouble is, the joker following too close behind you doesn't stand a chance.