Electric vehicles will one day account for nearly all new passenger car sales. In fact, Rethink Energy reported last week that their share may reach 10% of new sales in Europe in 2020. While range anxieties have been largely alleviated for many, naysayers are convinced that the short charge times of petrol and diesel vehicles are a convenience that cannot be sacrificed. However, a faction of start-ups are emerging that believe that combining the speed of supercapacitors and the stamina of batteries in a hybrid system will find the goldilocks zone for consumers. With technical success seen at the Graz University of Technology, Nawa Technologies and Skeleton are both now aiming to push a product to market in less than…