[ac97gt]

HotRoddin did an excellent job describing the error involved. to be honest i would present that info to the judge. have some numbers jotted down and when the cop says the distance he used (he must have to) to clock you, give her the error for half a second (not unreasonable error for a bored sober man). regarding the clocking you with their cruiser... i dont know about you guys but i usually check my rearview constantly and i know whos behind me. if a cop was coming up on me while i was speeding, before he could get within a few hundred feet of me i would jam my breaks on so hard he would have trouble not crashing into me, let alone guesstimating a speed using his speedometer. if you let a cop ride your *** long enough to let him guess your speed with his speedo you deserve the ticket.