There’s an article today in the NY Times (link here, subscription req’d) on backcountry skiing in the West using snowmobiles and snocats to lug skiers into the backcountry.
I think that’s just bad. People should leg it to get to these remote places, or stay on the groomed trails. Aesthetically, it’s all of a piece with jet-skis, motorcross, and the like. Wastes petrol, but doesn’t burn as much fat.