. "The Plane Driven PD-1 is a modification to the Glasair Sportsman 2+2 to convert it into a practical roadable aircraft. The approach is novel in that it uses a mostly stock aircraft with a modified landing gear \"pod\" that carries a separate engine for road propulsion.The PD-1's wings fold along its sides, and the main landing gear and road engine pod slide aft along special rails, creating a driving configuration."@en . . . .