69 Dart Swinger Missing!

So its out of the system. So that means the new owner hasn't registered it yet, but it also means your title is basically useless except for providing you with the VIN for the car. Not sure about Wisconsin, but again here in Ca if a car is totally out of the system it needs to be inspected at the DMV. Nothing crazy, they just check that the VIN's match, but you would need the car...

The ad in the paper isn't a bad idea, you might also try putting an add on Craigslist with a partial VIN. Do you have any pictures of the car?