The vehicle on Ebay is part of the LCC-1 Overland Train, also known as the Overland Train Mk. I, was developed in the mid-1950s by LeTourneau to deliver large quantities of supplies to remote army bases far from road networks: in particular, to personnel building and manning the Defense Early Warning (DEW) Line in northern Canada. The LCC-1 consisted of a large control vehicle at the front, linked to three four-wheel cargo trailers. The control vehicle comprised two articulated compartments: a heated driving compartment in front for a three-man crew, and a rear compartment with a 600-horsepower Cummins VF-12 diesel engine with an inline generator and fuel tanks. The generator provided power for electric motors driving each wheel on the control vehicle and trailers; thus, the control vehicle did not actually pull the trailers. During testing an additional power/fuel car was added to the rear of the train. The 173-feet long LCC-1 was similar to, and based on, the 1953 “Tournatrain”, which also inspired the 150-ton capacity VC-22 Sno-Freighter, which LeTourneau built for the private company Alaska Freight Lines.
For the Army, the LCC-1 was only a stepping stone to the TC-497, with a 450 ton gross weight and 572-foot length. While the LCC-1 was powered by Diesel engines, the TC-497 had four gas turbines....the power car of the TC-497 is the vehicle on display in Yuma (where it was tested).
Best wishes,
David Doyle