I would be afraid to admit that I have used one
I honestly think I used one before.... it was for a road trip to San Antonio from Houston... I didnt have a radar on me before....so I just went to walmart and bought one so I wouldnt be stuck without anyone... I guess a cobra is better then not having anyone at all.... just keep your bait of vehicles very close in front of you.... can help when coming over a hill I guess..... but man.... you got to love Walmarts return policy, no restocking fees for radar detectors
