Are you in the Milwaukee area? What city were you in? Was it a trooper or local cop that pulled you over? Didn't they make you pay on the spot with some sort of receipt that you use to fight the ticket if you want?
Speeding tickets in Wisconsin are tricky but they can be handled. The problem is that you are guilty. You were going (with the flow of traffic) maybe 65 in a 55 zone. The car behind you may have been the one the cop was chasing, but Wisconsin is a state where the rule is that 1 mph over the limit is speeding. So if you tell your story, the judge will probably believe every word of it and find you guilty.
Wisconsin still has the municiple court system. You'll appear in some city court somewhere, probably with a part time municiple judge. There is no jury option. You'll have to make two appearances before you get the court trial. The first appearance is just to set the date for the trial.
If you're really serious about beating the ticket you have to shake the foundation of the cop's speed estimate. That means getting the radar or whatever excluded. Again, tricky, but it can be done. Your best bet is to find an attorney who specializes in criminal law who has done a lot of court trials. Cops in Wisconsin, especially troopers, are pretty well trained. It's hard to trip one of them up on foundational issues, but as I said before, it's been done
I'm about 250 miles too far away to really help you out, though.