In the 90's, when Russia was coming apart, there were stories of civilians gettng ahold of the steath paint they used on fighters and painting their cars with it. Seemed pretty good at cop radar. Anything that will reduce the range of the radar is gonna help. I had a truck with the whole front end painted a dull black. No chrome at all. Frustrated the heck out of a laser cop one time. By the time he got a lock on my headlights, I was slow.