1) The Invisi-brake is an imaginary device normally used by automobile passengers to stop a vehicle when the driver apparently seems not to be trying.
2) An imaginary invisibrake allows any passenger to avoid (or induce) a panic-stop regardless of the driver's actual intent.
3) invisi-brake, Invisibrake; device allowing any occupant other than the driver to affect stoppage of a vehicle already in motion.
As they sped toward the intersection, she wondered if he saw the red light and instinctively pressed hard on the invisibrake.
Hey, I'm not such a bad driver, get off that Invisi-brake! I have it under control.
I drive fast and loose so my wife is constantly slamming on the invisi-brake. Screaming is not allowed.