I took a night ride a couple of months ago when I lived near a Germantown, MD woods. There was 7 or 8" of snow on the ground with a layer of ice on top. I took the mountain bike to try to stay on top of the ice. I was able to ride thru heavily wooded areas over logs and rocks and holes in the night without sinking into the snow or tripping on objects. It was very cool to ride along on the sheet of rough ice. If it had been smoother ice I may have slid.