why dont you guys just turn off the engine, and make sure it's off before you leave the car??
If you want the car's engine to stay on while you leave the car, why dont you just turn off ASS and make sure the car is still on as you leave the car...
in either case, you are sure that non strange unpredictable scenarios would happen...
i understand it's nice to discuss and trying to figure out... but i guess you'all like to find loop holes.
so please Carry on