A passion for racing cars and sustainability aren't usual bedfellows. Hugo Spowers is not an usual entrepreneur though, and the business he has created, Riversimple, isn't a business-as-usual company, as represented by its purpose: “To pursue, systematically, the elimination of the environmental impact of personal transport”.

The headline innovation of Riversimple is they are bringing to market a hydrogen fuel cell car: the Rasa. Whilst this is impressive, it is actually only one of the cutting edge circular economy innovations at the core of this company.  As Andrew Davis, CEO of the Environmental Transport Association, observes: "It’s important to think outside the box. I think some people at Riversimple don't know where the box is”