Gustave Whitehead's condor
Trajan Vuia's aeroplane-automobile
Glenn Curtiss's autoplane
Felix Longobardi's combination vehicle
Henry Ford's flying flivver
Waldo Waterman's arrowbile
Harold Pitcairn's autogyro
Buckminster Fuller's dymaxion omnidirectional human transport
William Bushnell Stout's skycar
Theodore P. hall's convaircar
Robert fulton's airphibian
Daniel Zuck's plane-mobile
Moulton B. Taylor's aerocar