^^^ i'm a newbie and don't really want to keep kicking the dead horse, however, the setup from above webmaster's design:
what is it exactly doing on shutdown?
1. the car is turned off and the driver pulls out the key, the circuit simulates a shutdown button being pushed and shuts down the computer. what happens if it hangs?
OR
2. the car is turned off and the driver pulls out the key, circuit simply cuts power from the computer and the machine turns off instantiously.
i'm such a moron right now

please enlighten me.