In 1935, following a competition called by the Bureau of Air Commerce, seeking design and construction proposals for an airplane affordable by the masses, Swanson designed the aircraft, and Fahlin designed the propeller and produced the " Fahlin SF-2 Plymocoupe" which utilised the engine of a 1935 Plymouth which also featured design accents, both interior and exterior, borrowed from the same car. After flight testing by the Bureau, the Swanson-Fahlin plane design did not win the competition. The "Plymocoupe" was classified as a "flying automobile" because it utilised the engine of the 1935 Plymouth car. The "Plymocoupe" design also used many components borrowed from the car including the dashboard and the indicators. Swanson died in February 1935 of pneumonia while still building the Swanson-Fahlin SF-2 Plymocoupe. After his death, the airplane was named the Fahlin SF-2 Plymocoupe. Swanson is mentioned in Jerry Sloniger's 2005 book "1924: Flying Capone's Booze", where he appears as the chief engineer of the Lincoln-Standard Airplane Company.