Abstract: Air, Land and Sea vehicle is convertible between aircraft form, road vehicle form and boat form. The conversion between aircraft form and road vehicle forms having (4) four tires as an automobile as well as a roadable vehicle structure that are movable outwardly for highway usage, and inwardly into stored position for the aircraft form or boat form, and having storage for the wing and tail assemblies which has a foldable section for this purpose. For conversion between aircraft form and boat forms, the apparatus has a retractable or extendable water propeller as propelling means in the water, and parts arranged for steering. The wings and tail assemblies are moved inwardly into stored position including auto and aero tires moved inwardly into their water-leak-proof compartments.