Supposedly, that car's been fixed in NL, but my NL objects.package file got corrupted shortly after I used it and Mrs. Crumplebottom hasn't been bitten by a vampire in my game so I can't see what else would have caused it.
Also, the noise of the car moving kept playing quite loudly over and over even after the sim stopped using it and even after I sold the damned thing back and got rid of it. Thankfully, the noise went away when I exited and reloaded the lot the next time.