Can i add to mr 4door the human eye can only see a small amount of the spectrum to which IR(infrared) and UV(Ultraviolet) belong whilst i must agree that radar works on bouncing a high freq pulse of sound. i must correct the knob jockey on the LIDAR cos if you wear night vision goggles you can see the beams from miles away.
My best idea to not get caught is if youre gonna do it do it when there is nobody to hit except for trees and car magnets aka power poles. Cos in suburbia little kidz do run infront of you even at 230am(I`m still finding turd under the drivers seat NEVER AGAIN!!!!)