How does a fuel cell vehicle work?

How does a fuel cell vehicle work?

Similar to a battery electric vehicle (BEV), a fuel cell electric vehicle (FCEV) uses an electric drive system. The key difference is in the energy storage. Hydrogen fuel acts as the energy storage in FCEVs. The fuel cell turns the energy into electricity to power the truck. Hydrogen replaces the gas or diesel, while the fuel cell essentially replaces the engine. The fuel cell takes in the hydrogen and produces the electricity needed to power the vehicle. 

A transition to hydrogen fuel cell from gas or diesel is effectively going electric without needing the weight of batteries to get range. The range instead comes from the on-board hydrogen. And that range is often superior to BEV, cleaner than diesel, and without compromise on hauling power.