Okay, I might just order those megamagnets, which my theory is would be enough to foul up the computers of a car if you held it near enough to the engine for a while! Then once that guy had parked... (So if you read about a person who broke her hand with a magnet she can't let go of for some reason, that'll be me - the reaosn I don't engage in brilliant criminal acts is 'cuase I'll always forget some detail... )