Front/back radar has been around for years. I remember when Texas state troopers got them, definitely made sitting in the middle of interstates interesting for them on picking off speeders. I know radar has a moment where it must calculate itself to a zero point so as to determine the speed of the cop v. you, but I am unsure of that amount of time.
Guess what we need now is radar deflectors, we can jam lasers but we need something which can absorb or rebound K or Ka in a different direction.
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