a heating device 13 which is operatively connected to the internal combustion engine 12 and or a fuel cell it is for example possible for the waste heat of a cooling system of the internal combustion engine 12 and or the fuel cell to be utilized for the heating of the second compressed gas vessel 3 alternatively and or in addition it is also possible for the energy contained in the exhaust gas of the internal combustion engine 12 and or the fuel cell to be utilized for heating the second compressed gas vessel 3 accordingly the heating device 13 may be operatively connected to a cooling system and or an exhaust system of the internal combustion engine 12 and or the fuel cell finally it is pointed out that the components in the figures may not be illustrated to scale and that the individual variants illustrated in the figures may also form the subject matter of an independent invention spatial definitions such as u201c right u201d u201c left u201d u201c upper u201d u201c lower u201d and the like relate to the illustrated position of the respective component and should be appropriately mentally adapted in the event of a change to the specified position although embodiments have been described herein it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.