Thanks to 'WHEELS' for this information. Audi has officially taken the covers off its Sky Sphere concept vehicle ahead of its public debut at Pebble Beach Concours d'Elegance this weekend. The first of three 'Sphere' concepts to be revealed, the Sky Sphere is an insight into Audi’s future design language and a preview of the technology the German manufacturer will utilise moving into a world without internal combustion engines.