Quote:
Originally Posted by SnowyCamaro
I like this one. 
I've always thought of adding metal contacts to the backside of the door handles that would be electrified once you lock the car (like at the same level as a taser). Everyone checks to see if its open first, then BAM! on the floor twitching.
Except for when your friend / wife / child tries to open the locked door  |
A friend of mine back in the 70's sis a similar thing with a spark plug connected to the metal frame under the drivers seat with a switch to turn the distributor output to a separate coil. This worked fine until one time his wife forgot to turn it off before she tried to start the car. The system was removed shortly thereafter.