Abstract: A two-wheel vehicle foldable to have a width equivalent to the width of a license number plate can be contained in a door, side walls, or a rear wall of a four-wheel vehicle. Handles and steps of the two-wheel vehicle can be folded so that the vehicle width becomes equivalent to the width of the license number plate. Accordingly, containing space on the four-wheel vehicle at the time of mounting the two-wheel vehicle can be made to be small. As a result, vehicle compartment space of the four-wheel vehicle can be secured, and the two-wheel vehicle can be easily mounted onto the four-wheel vehicle.

Abstract: A seat holding mechanism for a two-wheel vehicle for holding a seat rotatably in the horizontal direction at a predetermined height. The seat holding mechanism is disposed on the side of the seat. The seat holding mechanism allows the seat to be to be fixed at another height, so that when the vehicle is in a driving mode, the seat is prevented from rotating and the riding state can be assured. By adjusting the seat at the predetermined height in a non-driving mode, the seat can rotate in the horizontal direction. Consequently, in the non-driving mode the seat can be used as a chair, thereby improving the attractiveness of the vehicle. The two wheel vehicle with the seat holding structure has a foldable body, allowing it to be easily mounted in a four wheel-vehicle.

Abstract: A two-wheel vehicle foldable to have a width equivalent to the width of a license number plate can be contained in a door, side walls, or a rear wall of a four-wheel vehicle. Handles and steps of the two-wheel vehicle can be folded so that the vehicle width becomes equivalent to the width of the license number plate. Accordingly, containing space on the four-wheel vehicle at the time of mounting the two-wheel vehicle can be made to be small. As a result, vehicle compartment space of the four-wheel vehicle can be secured, and the two-wheel vehicle can be easily mounted onto the four-wheel vehicle.

Abstract: A seat holding mechanism for a two-wheel vehicle for holding a seat rotatably in the horizontal direction at a predetermined height. The seat holding mechanism is disposed on the side of the seat. The seat holding mechanism allows the seat to be to be fixed at another height, so that when the vehicle is in a driving mode, the seat is prevented from rotating and the riding state can be assured. By adjusting the seat at the predetermined height in a non-driving mode, the seat can rotate in the horizontal direction. Consequently, in the non-driving mode the seat can be used as a chair, thereby improving the attractiveness of the vehicle. The two wheel vehicle with the seat holding structure has a foldable body, allowing it to be easily mounted in a four wheel vehicle.

Abstract: A motor vehicle adapted to be powered by a drive source driven by batteries which includes at least one battery. A control unit includes an electronic controller, a motor driver for a drive source, and a shift motor. The at least one battery and the control unit are integrally formed and disposed in proximity to a drive source.