The Nuffield Guppy was a small military vehicle designed by Sir Alec Issigonis while he worked for the Nuffield Organisation in the early 1940s. The vehicle was designed to be parachute-droppable and was intended to assist paratroops to transport loads up to at walking speeds and to be amphibious. The vehicle resembled the DUKW but was only about long. It had large balloon tyres and an outboard motor at the rear. It was capable of carrying one person with equipment - or being used as a kind of motorized wheelbarrow by someone walking alongside the vehicle.