This car makes a little hydrogen go a long way

摘要

Hugo spowers puts his foot down. The car leaps forward, pressing me into the passenger seat. I'm zipping through London in a new kind of vehicle: its motors are in its wheels, it brakes without friction and it can drive 480 kilometres on one tank of the lightest element in the universe. Spowers is taking me for a spin in the Rasa, a prototype hydrogen car that emits only water vapour. Trying to power a normal car with hydrogen usually requires a bulky fuel cell capable of delivering the same output as a combustion engine - typically around 100 kilowatts. But the Rasa, built by start-up Riversimple in Llandrindod Wells, UK, does things differently.