NOVELTY - The method involves utilizing drive units (12, 14) to provide energy for driving a motor car (10) and store energy in electrical energy storage devices (24, 28) during recuperation process. Total power value is entered for controlling the drive units and a recuperation unit of the motor car. A first power value is determined for forming a basic amount of the drive units and the recuperation unit. A second power value is determined by forming a difference of the total power value and the first power value, where the two drive units are driven according to the two power values.    USE - Method for operating a vehicle e.g. electrical propelled vehicle such as motor car, and a hybrid vehicle.    ADVANTAGE - The method enables utilizing energy and power from the electrical energy storage devices in an efficient manner, and recovering brake energy from the motor car in an easy manner. The method enables increasing efficiency of a battery of the motor car and storing large amounts of power. The method ensures that the electrical energy storage devices are small in volume, light in weight, prolonged in service life, and provided with stability. The method ensures that the drive units utilize inexpensive components. The method enables improving drive and brake performances of the motor car, improving handling characteristics of the motor car, and reducing power consumption. The method enables storing the energy of the drive units, so that operation of the motor car can be increased in a reliable manner, thus preventing damage of the drive units in an easy manner. The method enables reducing installation space, weight and costs of the drive units.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a device for operating a vehicle.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a device for operating a vehicle.    Motor car (10)    Drive units (12, 14)    Rear axle (16)    Front axle (20)    Electrical energy storage devices (24, 28)