Found this on Snow Journal.
Could be useful turning an old tractor into transportation vehicle to your backwoods chalet.
Going up Teton Pass in deep snow may also work. As for going down steep grades I am not so sure it would slow down. The old Tucker Snowcats were always interesting on extremely steep grades when the tracks filled up with packed snow and it became a really fast sled.
Reference Link on Snow Journal http://www.snowjournal.com/page.php?cid=topic16694