I spent 12 hours stuck on I-40 east of Albuquerque in a blizzard one night. Had to go to my happy place. Fortunately, we had some food and water in the car and about 3/4 tank of gas to run the engine every once in a while.
I always carry two cans of STERNO and matches in my survival kit. Just in case. Plumber’s candles also work. You would be surprised how much heat a small candle can put out.