First, i would like to thank all the truckers (not you jerry) that run i-84, for the new sets of chains they throw off every winter. just cut them down and you have a set of chains for life.
Back to the staying alive part, simply think of it as you would for a week long hunt in very rugged counrty where nobody can help you. Build a pack with the stuff you need to stay warm and alive, and throw that in your rig and keep it there, then if you get caught in one of our suprise blizzards, your ready as can be. One of the biggest dangers out here is the city driver who can still go 70mph in his lexass, in snow or on the ice under the snow, because the salesman told him he could. When they crash, it locks up the road for everybody for hours.
Atv's do work good, as long as you arn't in to deep a snow, i was riding on top about three feet of snow once, and found an air pocket, down to the bottom it went, guess who had forgot his shovel? I dug with my rifle stock for an hour, but even with the winch couldn't get it out, (the atv was chaind on all four). I ended up walking out that night and by morning there was two more feet of snow on it, it stayed there all winter being rode over by snowmoblers who never knew it was there. Yes, the west is best! blue