[x3m157]

I used to drive an old ratty Subaru Impreza which was at one point meant to become a racecar (it never did) so the previous owner had removed the key ignition system. Never had it stolen because in lieu of a key it used an obscure sequence of flipping unlabeled switches in a specific order (power, fuel, ignition, then crank) to get it to start. Security through obscurity!