Those who often travel on the highway must own of these radar detectors. With it, I am sure, they can escape from being caught by the speed limit detector. My ex-boss got one for his Mercedes after getting speeding ticket each time he has to drive outstation. The maximum speed limit on our highway is only 110km/h and driving a Merc, you don't feel it when the speed goes up more than that. So better get a radar detector than getting speeding tickets.