Since we're telling stories, I'll relate my similar experience. I traded my 1989 Accord in when I purchased my 2012 Mazda3. The Honda had been severely damaged in a hydroplaning accident, but was still drivable. I figured it would go to auction as I got very little for it. A couple months later I was contacted by both the Mesquite Police and the Mesquite impound lot for the purpose of getting my car back. I explained that I had traded it in and no longer owned it. Apparently, whoever was driving it got arrested which was why the car ended up impounded. Both entities told me to simply disregard the issue. I still submitted the required form to the state DMV to notify of change in ownership and will now do so consistently in the future. It seems that doing so isn't a high priority for dealerships.