Audi cooperates with Alta Devices to integrate flexible solar in car's roof

Similar to the Sion, an e-car with integrated solar cells, Audi now announced a cooperation wit Alta Devices, an Hanergy company.

But other then Sono Motor’s electric vehicle, who presented an actual prototype-car with real solar cells integrated, Audi has to show: Nothing.
The German carmakers have a lot of announcements and concepts within the electric vehicles space those weeks, but little real product it seems.