What ever happend to that alarm where smoke was filling the car if someone was trying to steal it? That was cool ..... but illegal still, wasn't it?

So if alarms have got to be "silent", what kind of deterrent shall we use? You can't electrify your car, you can't have smoke, you can't have an alarm.... you can't beat the little f****** because if you harm them they can sue you.....

Might as well leave the keys in and alll doors open... and also put an ad in the paper.... car to steal... please help yourself....