compact, concentrated lift – twenty years before the commercial availability of jets. Estimating that designing a land–sea–air vehicle was then financially and technically out of reach, Fuller focused on the most dangerous and challenging mode of such vehicle: landing and taxiing on hard ground. Fuller favored front-wheel drive, studying the way a wheelbarrow could more effectively pull its load rather than pitch forward when pushing a load. He began studies of the relationships between vehicles (cars, trucks – and also birds and fish) with the media in which they operated (fluid dynamics) – as well as steering mechanisms in nature, especially the rear "single fin" steering of birds and fish. Burgess, inventor of the first delta-wing aircraft, was invaluable to the project – but skeptical the vehicle would ever fly. Fuller theorized that getting a long, aerodynamic 'plane' fuselage – which was also inclined to have trailing, rear steering – to land safely and not immediately turn into the wind, would be a major challenge. The vehicle would inherently exhibit something he called "ground-loopiness," and chose to focus his energy there. Although it was never intended as such, Fuller anticipated the public would instinctively call such a vehicle an automobile, and when licensing to drive the vehicle on Connecticut roads, acquiesced and applied for an automobile registration. Fuller had worked with sculptor Isamu Noguchi to create plaster wind tunnel models of the Dymaxion to help determine its teardrop shape. Authors of a 2011 detailed computational fluid dynamics (CFD) analysis at Coventry University of the Dymaxion bodywork noted the form's "similarity in shape to a humpback whale" and concluded "the Dymaxion car looks close to a drag optimum style and serves as a useful reference for low drag forms." Prototypes One, Two and Three Prototype One, at long, was built on a hinged two-frame chassis constructed of lightweight chromoly steel with aircraft-type dished lightening holes – and powered by a Ford V8 engine producing in a rear-engine, front-wheel-drive layout. The front axle was a re-purposed and inverted (the flipped axle must be inverted to prevent the pinion gears from running the wrong way) rear axle from a contemporary Ford roadster. Tires were provided by Goodyear. The suspension used leaf springs "turned sideways" (transverse leaf springs) and bodywork featured sheet aluminum over an ash wood frame, with a roof partially constructed of snap-on painted canvas. Original blueprints indicate seating for four, including