The Snow Cruiser built in 1939 for Admiral Richard E. Byrd's third Antarctic Expedition was designed to carry a crew and supplies to last for a year of exploration. Plus a plane for making observations. Cool. The Snow Cruiser was over 55 ft long, 16 ft high and nearly 20 ft wide. It was powered by two six-cylinder Cummins diesel engines generating power to drive a 150 hp General Electric motor located in the hub of each wheel. The special Goodyear tires stood ten feet tall. The Snow Cruiser was built for Byrd by the Pullman Standard rail car company in Chicago. The Snow Cruiser was so large that the only way it could be transported from Chicago to Boston, where Byrd's expedition and gear were loaded onto the ship North Star, was to be driven on two lane highways. The hybrid drive train claimed a range of 5,000 miles! But the Cruiser was driven only 92 miles in the Antarctic before becoming bogged down.