View of GMC amphibious truck (DUKW). Label on back: "By means of a power-driven winch, the amphibian truck can pull itself out of soft, sticky mud with astonishing ease. The winch cable is simply attached to a post, tree or any solid object on shore and the engine-driven winch does the rest. Unbelievable is the term used by engineers in describing the many accomplishments of this unique sea-going truck now being built by General Motors Truck and Coach. (Approved by the War Department, Bureau of Public Relations.)"