NOVELTY - The vehicle (1) has a display device (5) and an input device (7) data-technically attached to a data processing device (3). The data processing device operates a motor vehicle-side information system (9) and an operating system designed for a mobile communication device. The data processing device emulates the mobile communication device, and includes a separate microprocessor on which the operating system is executable. The information system and the operating system commonly use the display device and a resource (19) e.g. position determining device, of the vehicle.    USE - Motor vehicle such as an electrically operated motor vehicle i.e. fuel cell vehicle.    ADVANTAGE - The data processing device operates the motor vehicle-side information system and the operating system designed for the mobile communication device, thus enabling simple updating of software applications, and easily ensuring an actuality of the data processing device relative to software design or available software innovations. The motor vehicle-side information system has maximum system integrity and/or a maximum functional safety relative to the safety-relevant applications of the motor vehicle. The motor vehicle enables holding of the operating system of the mobile communication device in a current software state, thus providing software information to a user of the motor vehicle without endangering integrity of the motor vehicle. The vehicle avoids the need for providing the separate hardware of the communication device. The data processing device emulates the mobile communication device, thus virtually providing a complete functional range of the mobile communication device to a user of the motor vehicle. The vehicle obtains a high speed during executing applications of the mobile communication device, and saves hardware cost. The vehicle has increased operation reliability.    DETAILED DESCRIPTION - The resource is a wireless chip, memory medium, loudspeaker, microphone, imaging device, and microcontroller. An INDEPENDENT CLAIM is also included for a method for operating a data processing device of a motor vehicle.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic side view of a motor vehicle including a data processing device.    Motor vehicle (1)    Data processing device (3)    Display device (5)    Input device (7)    Motor vehicle-side information system (9)    Resource (19)