NOVELTY - The car (1) has electrical loads (17, 25) connected with an electrical power supply. An onboard electrical network (11) is provided with two generators (15, 23). A first generator is connected with the onboard electrical network for providing continuous power supply. A second generator is operated when failure is occurred in the first generator. The second generator is driven by utilizing an auxiliary wheel (29). The first generator is swung out and connected with a track such that displacement movement of the car is converted into rotating movement.    USE - Onboard electrical network integrated motor car.    ADVANTAGE - The car frequently avoids high onboard network electrical load so as to prevent failure of a vehicle battery in motor cars, thus avoiding stopping operation of a fuel pump of a combustion engine caused by lower voltage. The car is associated with a failure control device so as to control occurrence of failure in the vehicle battery, and consumes less electrical power during movement of the vehicle. The safety-relevant electronic system maintains stable operation without requirement of a redundant electrical power supply. The car has an onboard electrical network with straight-forward technical circuiting operation and provides redundant energy when the failure occurred in the onboard network. The second generator is a permanent excited generator connected with an auxiliary wheel, so that kinetic energy of the auxiliary wheel is converted into electrical power of the load. The car has reliable operation and compact structure, and avoids requirements of a supplementary friction resistor and power supply. The electrical load is designed as a safety-relevant load so as to inhibit sensitive situations of the motor car.    DETAILED DESCRIPTION - The second generator is a permanently excited generator.    DESCRIPTION OF DRAWING(S) - The drawing shows a top perspective view of an onboard electrical network integrated motor car.    Onboard electrical network (11)    Generators (15, 23)    Electrical loads (17, 25)    Auxiliary wheel (29)