The innovative Quant e-Sportlimousine has moved a small step closer to production reality with the news that Nanoflowcell - the Liechtenstein-based company behind the car - has been granted official approval to test the car on German and European roads. 

Officials at the company see this as the final step before the salt water-powered electric car will be ready for series production.We take a closer look at the technology behind the Quant e-Sportlimousine and ask if this really is the next big thing.