Its fuel-cell powertrain is described as a “Network Electric” system. Four in-hub motors use recovery braking to charge super capacitors (which charge faster than traditional batteries) that then release electricity back to the motors for acceleration. That means that the hydrogen fuel cells which power the system don’t need accelerative juice, merely power to keep the Rasa moving through traffic. That moving can happen at speeds as high as 60mph, and its 1.5kg tank of compressed hydrogen can carry it 300 miles between refills at an equivalent 250mpg.