New British hydrogen-powered motorcycle too quiet, where to fill up?

A new zero-emission bike has been designed by British engineers, but is causing a stir because it is too quiet. "So quiet in fact that its designers are looking to introduce artificial vroom to keep potential customers happy. Powered by a high pressure hydrogen fuel cell, the Emissions Neutral Vehicle (ENV) produces the equivalent noise of a personal computer fan belt."

Additionally, the bike can only refuel at one station in Britain. More on this story from Reuters.