TC-497 Overland Train, Mk II by R.G. LeTourneau (1962). The LCC-1 was so successful that the US Army contracted LeTourneau for a larger version. The TC-497 Overland Train Mark II has four 1,170-hp Solar 10MC gas-turbine generators, one in the control car and three others spread out along the train. At 572 feet long, it is the longest trackless train ever built, able to carry 150 tons of cargo at 20mph. Each car now has four steerable wheels. Steering commands are sent from the control car to each set of wheels in turn, timed so that they turn at the same points where the control car turned. The vehicle performed perfectly in testing, but the US Army abandoned it before it saw service, as it was rendered obsolete by the introduction of the Sikorsky S-64 Skycrane heavy-lift helicopter.















