How do you react when someone speeds up behind you after you’ve safely entered the roadway. They speed up to the point where you can’t see their headlights. My immediate response to someone riding my bumper is to slow down ten miles per hour from my current speed. I’ll tell my kids in the back seat to stare at the driver behind us. If they continue I will slow down even more. I will stop and you will have to go around me eventually. I’m in no hurry.
New car technology is making it more difficult to attempt entry into another motorist’s trunk. The forward collision detection will apply brakes if it senses you are too close. Good thing you can disable it.