69 Dart Swinger Missing!

That title you have, is likely, worth little more than the value of a piece of paper.

You may have a free car if it hasn't be re-registered yet, depending on the laws in WI.

Depends entirely on the laws in Wisconsin, or possibly the state where the car is now. But either of those statements could be true!

In California, if the car is no longer "in the system" a new title can be issued from a bill of sale. In that case, even if the old title is found, it's useless as it was replaced when the new title was issued. However, if the car is actually "in the system" and hasn't been re-registered, it belongs to the title holder. Even if it isn't still in the system, but hasn't been registered by the person that currently has the car, you could update the title and be the legal owner. Then you'd just have to find it, and the very unhappy person storing it. And, even if it WAS in the system, there are still legal ways of getting a new title without the old title, in which case the old title is worthless (again).

But Wisconsin may have an entirely different set of laws. And even though that's the law here, your experience at the DMV might differ depending on who helps you at the window. A couple of my cars were purchased with bills of sale, and I had vastly different experiences getting them titled in my name.