Snoop and I, using his True Speed laser gun, tested my set up yesterday. On 12 passes we jammed the gun 10 times w/ 2 punch throughs. The punch throughs happened at low speeds (under 20 mph) and required him to move the laser away from the center mass onto the side marker for one, and one headlight for the other. It probably does not help that my car is a light Irridium Silver color.
Since most LEO's shoot center mass I feel pretty well protected.