> I've watched documentaries on Mt. Everest ascents where the climbers faced brutal cold, wind, & avalanches. Perhaps gear adapted to the conditions of the tund

> I've watched documentaries on Mt. Everest ascents where the climbers faced brutal cold, wind, & avalanches. Perhaps gear adapted to the conditions of the tundra could be an effective "survival pack" enabling people to survive for a few more hours should a car be stranded. Having a car simplifies life a lot compared to alpine ascents. A car is going to be a better shelter than any tent available, and you don't really need to be concerned about volume/weight/water resistance of sleeping bags. (So it's still not cheap, but buying and layering some cheaper synthetic options saves a lot of money compared to -40C down bags.)