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The Antarctic Snow Cruiser was a vehicle designed from 1937 to 1939 under the direction of Thomas Poulter, intended to facilitate transport in the Antarctic. While having several innovative features, it generally failed to operate as hoped under the difficult conditions, and was eventually abandoned in Antarctica. Rediscovered under a deep layer of snow in 1958, it later disappeared again due to shifting ice conditions.

The Snow Cruiser arrived in Bay of Whales, Little America, Antarctica in early January 1940 and experienced many problems. It was necessary to construct a ramp from timber to unload the vehicle. As the vehicle was unloaded from the ship, one of the wheels broke though the ramp. The crew cheered when Poulter powered the vehicle free from the ramp but the cheers fell silent when the vehicle failed to move through the snow and ice. The large, smooth, tread-less tires were originally designed for a large swamp vehicle; they spun freely and provided very little forward movement, sinking as much a 3 feet into the snow. The crew attached the two spare tires to the front wheels of the vehicle and installed chains on the rear wheels, but were unable to overcome the lack of traction. The crew later found that the tires produced more traction when driven backwards. The longest trek was 92 miles -- driven completely in reverse. On January 24, 1940, Poulter returned to the US, leaving F. Alton Wade in charge of a partial crew. The scientists conducted seismologic experiments, cosmic-ray measurements, and ice core sampling while living in the snow- and timber-covered Snow Cruiser. Funding for the project was canceled as the focus in the United States became World War II.

In the late 1940s, an expedition team found the vehicle and discovered it needed only air in the tires and some servicing to make it operational. In 1958, an international expedition uncovered the snow cruiser using a bulldozer. It was completely covered by several feet of snow but a long bamboo pole marked its position. They were able to dig down to the location of the bottom of the wheels and accurately measure the amount of snowfall since it was abandoned. Inside, the vehicle was exactly as the crew had left it, with papers, magazines, and cigarettes scattered all around. Later expeditions reported no trace of the vehicle. Although there was some unsubstantiated speculation that the (traction-less) Snow Cruiser was taken by the Soviet Union during the Cold War, the vehicle most likely is either at the bottom of the Southern Ocean or buried deep under snow and ice. Antarctic ice is in constant motion and the ice shelf is constantly moving out to sea. In the mid-1960s, a large chunk of the Ross Ice Shelf broke off and drifted away; the break occurred right through Little America. It is unknown on which side of the ice shelf the Snow Cruiser was located.