Leland Bryan built his roadable aircraft in the town of Milford, Michigan.

The Bryan Model I was built with a welded steel tube fuselage frame, wings from a Briegleb BG-6 primary glider and a Crosley automobile engine, which was later replaced by a 40 hp Continental.

The Ercoupe landing gear was used for the roadable operations, reaching up to 60 mph on the road.

After accumulating 70 hours of flight time and 1000 road miles, the Model III crashed during a flyby at the 1974 Experimental Aircraft Association (EAA) airshow, at Oshkosh, Wisconsin, when an inadequately secured wing section parted company killing the designer.

At the time of his death Leland Bryan was in the process of designing the Model IV Autoplane, based on a Rutan VariViggen.