Tamiya 1/35 Dragon Wagon US 40-Ton Tank TransporterDescription During the Second World War, the development of heavy tanks continued at a fevered pitch. To deploy these tanks to the front line, or retrieve them when damaged or broken, the necessity of a large scale transport vehicle was heightened. In April of 1943, the U. S. started production of "The Dragon Wagon", one of the biggest tank transport vehicles of WWII. Constructed around an armored cabin and a sturdy trailer, it boasted a loading