Is she still there under the snow? or has she fallen though the ice to the ocean?
Here is a summery of an article about it on Wikipedia
The Antarctic Snow Cruiser was a vehicle designed from 1937 to 1939 under the direction of Thomas Poulter, intended to facilitate transport in Antarctica. The Snow Cruiser was also known as "The Penguin," "Penguin 1" or "Turtle" in some published material
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 (0.91 m) into the snow
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 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
(Was)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.