Polar-Snow-Crawler-PSC-001-1. This is a modern design of Antarctic Snow Cruiser of Tomas Poulter for Admiral Richard Byrd's expedition. It sunk in snow in Antarctic due to too high pressure on the ground. http://www.diseno-art.com/news_content/tag/snow-vehicles/ http://www.unusuallocomotion.com/pages/more-documentation/4x4-wheeled-rigid-vehicles-heavy.html#page4
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