Yeah, a lot missing.

But I was concerned that the unspoken assumption in the video was that the car ran out of gas because though stuck, it was running just to keep the car occupants warm, and only after it ran out of gas did they break out the supplies. I realize that this is what most people do, but IMO it is wrong.

If you have the warm cloths and blankets in the car, then don't run the engine and heater to keep warm. Save the gas so you can drive away, even if you sit there a day. If you run out of gas and then break out out the blankets, you have just necessitated a "rescue" in the form of someone bringing gas to the car.

So IMO, the message should be be prepared with warm cloths and blankets etc., and if stuck, turn the car off. Don't run out it out of gas. If necessary, only run engine to charge phones etc. and the car battery.