I like pimpin323's solution but I'm guessing that now a days, all thief's wear gloves. Then again, even if they don't, our police force is so stupid that they won't know how to dust finger prints, and it'll be devine intervention if they did know. hahahaha
PocketRocket,
I'm that violent meh? hahaha I wonder what other kind of impression I gave to you. hahaha
I'd put another 5-10 batteries in my boot. Then get a voltage amplifier and boost up to 100,000 WATTS/VOLTS (which ever is more powerful cos I ain't no electronic/electrical engineer) and wire it up to the insides of your door. Then they try to pick..... ZAP! They drop right down to the ground.
From the ground, there is a sensor that ties up to the electric-shockers. Once the electric-shockers goes, from below the car, cyanide gas will be released on whichever side the shock came from. Since the robber is shocked and paralyzed for a moment, the cyanide gas will kill him.
When I get back to my car, I'll see a dead monkey fucker on the ground with white foam from his mouth. BUT... BUT .... just to ensure justice has been done, I'll have to confirm and finalise it. I will disarm and open my car, and take my custom-made fish scaller with 50 pieces of 4" nails. I will scratch that monkey fucker's face till his face is totally unrecognizable. I'll then use a butcher knife and mince his hands and chop out his legs and mince it like meat pati. You know, like what McDonalds use to make their meat in their burgers.