I should also mention that plowing though 6" or more of new snow with XC skies is no picnic, either, but I do have the right skis for it. I use true expedition, relatively wide and short Alpina Discovery XC skis. These make a good ski to break the trail (gaiters are a must) and usually after two or three passes on the trail, I'm moving along pretty good. I sometimes use the snowshoes in the same way.

The reason I mention this is that grooming a trail for the fat bikes was first done with snowshoes. Takes a lot of passes with the snowshoes to get the trail fat bike ready, but it is doable. (Another way is with a snowmobile, but have no interest in those beasts.) These days, though, there are machines that do it. If you live in an area with a lot of snow, such as ours, there will likely be some public trails that are groomed for fat bike snow riding, just as there are groomed trails for skiing. As always, though, I'm on my own with my private trails, so off I go to do some work.