i work as a tester and ive seen loadsa shit like this , i love to see what people do to stop scum bags steal , one guy told me that ware he lived cars were always gettin nicked , so him and his mates rigged up a car with some kind of bags of fuel in them with wiring rigged up to the ignition it was rigged up so that if anyone tried to start it the wires would short and ignite the fuel , thought it was a bit extreme but at some point they have to understand dont steal , he didnt use the car it just sat waiting , thought it was a great idea though .