Hidden underneath the playful and dynamic appearance of a fire engine lies a very innovative propulsion method. H2O uses the fuel cell battery as a source of on-board energy. Major innovation: the hydrogen is produced in real time, based on the system's needs, which means it can overcome the problems associated with storing pressurized hydrogen. With its generously proportioned air intake, feline-shaped lights and plunging muzzle-like bonnet, the front of the vehicle is strongly identified with the Lion. The rear is reserved for the tank and a telescopic ladder.