The advantages of hydrogen fuel cells over internal combustion engines and battery-electric motors as vehicular propulsion include emissions, range and charging time. The hydrogen fuel cell car emits only pure water at the tailpipe, which is clean enough to drink and therefore does not contribute to local pollution. It only takes a minute or two to fill the tank of a hydrogen car, putting it broadly in line with a petrol or diesel car, and the range from this charge will be several hundred kilometres – something that could take hours for a battery-electric car to achieve.
