I heard from someone not too long ago that if a cop pulls you over for driving fast but didn't hit you with the radar or the laser he technically cant give you a ticket (because he has no proof that you were speeding) and therefore has to get you to admit that you were driving over the speed limit (aka "how fast were you driving?"). I got one of those radar detectors and have driven 20mi above the speed limit right by a cop and never been pulled over. Have you guys heard of this? It seems to make sense, but you never know...