The Mack LRVSW was a massive heavy-duty tractor built by Mack Trucks in the 1950s specifically for hauling supplies across the Arctic during construction of the Distant Early Warning Line. These trucks were designed to operate in extreme cold and deep snow, featuring oversized frames, very wide bodies, and powerful 600-horsepower Cummins V-12 diesel engines. They pulled long fuel and cargo trailers across hundreds of miles of frozen wilderness where there were no roads, forming part of the famou

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