Which, it looks like great fun. But in truth, its a flaming pain to operate tracks on packed snow or ice. Fun going downhill, but almost impossible to get back uphill. Tanks and other tracked vehicles have heavy steel tracks, of course, but in reality, they ride upon heavy, hard rubber track pads bolted to the track shoes. And these rubber pads provide absolutely no traction at all on ice.
As you watch the video, you'll see a brief snippet of the crew working on the tracks. What they're doing is removing every fourth track pad or so. That gives much better traction on snow and ice, and still keeps most of the track from getting beat up, or tearing up any roadbeds. On the other hand, removing every fourth track shoe is time consuming, and physically demanding work.
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