The ranges of power output covered by the individual propulsion systems are presented in the figure using an example. The advantage of this concept lies in its relative simplicity apart from its economical, structurally-simple and light electric motor, small battery relative to the pure electric vehicle and the possibility of partially emission-free operation. In contrast, the potential for regenerative braking reduces as a result of the small electric motor, apart from the additional weight as a result of batteries and electric motor when compared to a pure combustion engine drive.