That's exactly what I was thinking mrkim. Sheesh! If the car dealers can have them, why can't we?
Although I see Pulses point about "where" you cut power to the engine, sounds like the car
dealers don't give a shit about that all the same.

There's been a few recent carjackings where a toddler has still been strapped in the capsule in the back seat
when the car's been stolen. A remote kill switch would come in handy then and on most occasions the car wouldn't be
driving straight onto a high speed freeway and if it stopped in the middle of an intersection,
it's only going to draw attention to it immediately, and that's basically what you want.
Though it would be suggested to use some common sense cutting the engine remotely;
you could time it to stop safely if you still had it in your vision.

All just thoughts though.