I lay awake last night, pondering this.*
When someone hot wires a car, how do they then turn it off again?
I thought they would have to deliberately stall the car, but this wouldn't turn off the ancillary ignition mode. The radio and headlights would still be switched on, which would drain the battery. And we all know (thanks to the wonder of Hollywood) that bandits like to stop off at diners for a refreshing meal, a coffee and a driver change. It's in their best interests not to allow the battery to go dead.
So, answer me this, how do they turn off the car without the keys?
* I am not considering a more lucrative career as a professional car theif, it's just one of those odd things that pop into my head from time to time.