Vehicle having main drive motor, compressor and power source and method of operating the vehicle

Vehicle, in particular passenger or commercial vehicle, comprising a main drive motor, with a drivable by an electric motor air compressor and to an electrical power source from which the electric motor is fed, said air compressor is selectively connected to the main drive motor or with the electric motor in driving connection, wherein the air compressor is connected to an output drive of a power-branched transmission, wherein the power-split transmission having two input impulses, and, optionally, wherein a first Eingangstriebmit the main drive motor and a second input drive to the electric motor to be brought into drive connection, characterized in that the power-branched transmission (2) part of a is provided in the drive train of manual or automatic.