Q:    If your car had become stuck in thick snow, there was no-one else on the road, and you couldn't call for help, what'd be the best thing to do?

13. Get out of the car and walk back the way you came
14. Run the engine to keep warm until help arrives
15. Turn off the car, tie something bright to the antennae and wait for someone to come

Answer:  O - With the first two choices M or N you would risk dieing from hypothermia or carbon monoxide poisoning.