No matter what kind of defense one might try in court, around here, the judge will always ask you flat out if you were speeding. He/She will ask you what the speed limit was and how fast you were going. If you say you were doing 26 in a 25 and you can prove the RADAR was wrong in saying you were doing 27, and the cop was drunk and there was a UFO ... the judge will say "But 26 in a 25 is speeding. Guilty! Next!!"