ROADABLE AIRCRAFT

Provided is an air-ground use vehicle capable of opening and closing a door, while a main wing is folded along a fuselage, without interfering with the main wing. The air-ground use vehicle includes: a main wing; a fuselage; a sliding door provided in a side surface of the fuselage; and a hinge mechanism that connects the main wing to the fuselage and that is capable of rotating between a first state, in which the main wing is folded along the fuselage, and a second state, in which the main wing is opened to a side of the fuselage. In the first state, the sliding door opens and closes by sliding in a space formed between the main wing and the fuselage, with an outer surface of the fuselage and an inner surface of the sliding door facing each other.