64 FOUR TRACKS RIGID VEHICLES, HEAVY 2

Polar snow crawler psc 001 1 2

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

Hitachi zx55ur excavator

Hitachi ZX55UR Excavator. Four tracks for better mobility. http://photostp.free.fr/phpbb/viewtopic.php?f=13&t=7396&start=680

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