He had taken his candle lantern just in case and lit it and hung it in the middle of the roll bar, old Toyota Forerunner, he also cracked a window down on the lee side of the wind. It helped provide warmth, keeps the humidity down and gives off a nice light.
I always take one snow camping and hang it from the peak of my tent
I am not so sure about that being a good idea...
I have one of those exact same lanterns, as shown here...
http://www.rei.com/product/4496.htmA week ago, I felt like relaxing, and did not want any harsh electric lights (there is something about the nice warm glow of a candle, and these lanterns put off a lot more light than my wife's decorative candles).
So, I hung this lantern from the pull-chain of a ceiling fan in my house (fan turned off, of course). After about half of an hour, the pull chain was so hot that I could not even touch it. So it takes a while, but whatever is above this lantern does indeed get quite warm. I do not know what temperature it takes to ignite nylon, but I do not want to find out on a tent that I happen to be in at the time.
Of course, if it is snowing in a tent at the time, you might still be safe. And I have hung this lantern form my own tent before, but only for 10 minutes at a time. So it might still be safe to use thing thing for short periods. But after my experience, I do not want to risk it any more.
However, I would feel quite safe putting the lantern on the bottom of my tent, if I could find a way to keep it elevated from the floor, and if I could arrange it so that it could not tip over.
Just my $0.02, and worth every penny.