Sincea teardrop is said to be the optimum aerodynamic shape, Morelli casually tossed away the conventional automotive chassis layout with a wheel at each corner and adopted a rhomboid or X-chassis configuration, above. (Hence the name Pininfarina X.) There was one steering wheel at the front and a single drive wheel at the rear, with two more wheels toward the center to complete the diamond form and steady the platform. The single prototype was powered by a 1089cc Fiat inline four with 43 hp and a four-speed manual gearbox, installed diagonally in the chassis to maximize cabin and cargo volume. Overall length was not quite 170 inches with ample room for four adults.
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