I don't know if you were joking about the Pacer, but I can definitly say that I loved my Pacer. I always figured that it was modeled after the Pylons in Land of the Lost. You know, bigger on the inside than it was on the outside.
As for your car analogy, yes, you may have a piece of paper that says you own it, but if you leave it sitting out on the street long enough with the vin filed off so that no one can identify that you own it, you will lose your ownership pretty quickly.