I've thought about it, but decided not to bother. In my few years of driving I've rarely gone less than 5mph over the speed limit. I go maybe 60 in a 55 all the time, sometimes a bit more. On the thruway is another story. Let'* just say I'm pretty lucky I haven't been pulled over there!
But I always am looking for cops in my rearview or on the side of the road, I'm never NOT looking out. I've seen cops up ahead before, so I just slow down. So far it'* worked out for me. I've gotten 2 bogus tickets, the most recent for going 55 in a 40. But the cop was a good 1500 feet ahead of me when he supposedly clocked me speeding, a ricer passed ME (I wasn't racing him, that'* why) so I just plead not guilty and got it dismissed. No pts on my license.
Sometimes I have fun with 'em. If I'm next to a cop at a red light, I hit the gas hard (without squeeling the tires) at the green and fly ahead, but slow down when I hit the speed limit. There'* nothing wrong with accelerating fast.
I'm sure it wouldn't be a bad investment though. My luck may run out soon enough