I've heard stories of cars being stole off of the Enterprise lots, stolen from MT's, and used in police shootings. Usually the car would end up a total loss in some tow lot somewhere with the criminal arrested.

With the repo cars, they often did not come in because the customer didn't have the money and thought it was a better idea to keep the car instead(?), because the customer damaged the car and were trying to get their buddy to do some home repair, etc.

As for stories...I know one guy who had a second key made, jumped in the car and took off while the customer was in their house. Other time cars were towed out by a tow company after doing a drive-by the customers homes. But often times you go and knock on the door, they give you the key and there's drugs and/or alcohol all over the car and you clean that out and leave. Never got shot at or anything.