[Noah930]

So what's a guy in Wisconsin to do, then?

What does it say on the ticket regarding how your speed of 83 mph was obtained? Is your car also black? If the speed was by pacing or radar/laser, subpeona the calibration records. See if you can get the ticket thrown out on those technicalities.

I'd be inclined to fight the ticket. It's one thing to get popped for 65 in a 55--another to get someone else's ticket for 83 in a 55. What's wrong with being honest in front of the court? If the LEO is similarly honest, he might indicate that he may have made a mistake (or that he does not recall any of the details) and you'll be let off.