Abstract: A cargo box extension assembly for a cargo box of a vehicle and method of operating the extension assembly. The assembly includes a center panel configured and arranged for pivotally connecting to a front surface of a tailgate of the cargo box; a left panel; and a right panel, each of the left and right panels being rotatable between an open position and a closed position where the left and right panels are aligned with each other, when the cargo box extension assembly is installed on the tailgate of the vehicle and the center panel is pivotally connected to the front surface of the tailgate: the cargo box extension assembly being selectively movable between a collapsed position and an extended position; in the collapsed position, the cargo box extension assembly being at least partially received in a recess of the tailgate.

Abstract: A vehicle comprises at least two wheels, a front wheel and a rear wheel. A driving motor is connected as a unit to a framework, the framework being made up of a number of tubular members forming two trapezium structures. The wheels are connected to the motor-framework unit by further members, as well as dampening devices. A transmission between the driving motor and both of the front and rear wheels is also provided. A steering assembly is connected to the front steering wheel and the framework. A strut, which may be part of the transmission, is adjustably connected between the motor-framework unit and the steering assembly. Furthermore, the vehicle can adjust the castor angle of the front wheel.