?? One of the biggest challenges for the Automotive Industry during next decade will be to develop low environmental impact and possible cost-effective solutions for the powertrain architecture and, thus, limit their dependency on fossil fuel. Already in the early 2000s, OEMs have invested huge amount of funds to research different ways to lower noxious emissions in order to comply the more and more stringent regulation by central governments. Moreover, local authorities, as the European Commission and EPA (Environmental Protection Agency, in USA,) have imposed CO2 limitations and, therefore, the car makers are trying to optimize the conventional ICE-based vehicles and launch alternative type of powertrains, including pure battery electric vehicle (BEV) and hybrid vehicle (HEV), which combine, generally, an electric motor and a common engine.