Electrification of powertrain systems — battery, fuel cell or both?

The increasing electrification of powertrain systems is driven by the idea of using electric power as an alternative energy source. Fuel cells combined with electric traction are one example. Batteries will have a sufficient energy density for a maximum mileage of 200 km, sufficient for driving even in the largest of conurbations. In urban surroundings, a market for fuel cells as a range extender may develop. For mobility with distances of more than 400 km, there is no real alternative to the internal combustion engine powered by liquid hydrocarbons, as Volkswagen engineers predict.