Like identity theft, but with vehicles, the genuine owner of the vehicle with the properly registered licence plate will be contacted by the authorities if any crimes or offences using the cloned vehicle are reported, but will obviously conceal the identity of the real perpetrator allowing them to continue driving around. If the criminal passes through a 70 mph speed camera at 100 mph then you will receive a summons in the post and a possible ban. Its then your responsibility to defend yourself by proving that it was not you that committed the offence. This can be difficult if you live in the same vicinity.