By 1920, the automotive was no longer a primitive experiment. Companies such as Rolls-Royce, Cadillac, Hispano-Suiza and Voisin were making potent and luxurious automobiles, the technical achievements of the age. And then there was this, the Flyer, which is no more than a motorized park bench on bicycle wheels. No suspension, no bodywork, no windshield. It was actually a five wheeler, with the dinky 2-hp Briggs and Stratton engine driving a traction wheel on the back, like a boat's outboard motor. The Flyer represents something we'll see several times on this list: The drive to make the absolute cheapest, most minimal automobile possible.
Next 1933 Fuller Dymaxion