Audi 'hummingbird' by BBH

Bartle Bogle Hegarty has created a campaign to promote the Audi's A6 Avant and its ultra-lightweight technology.

An animated film features a hummingbird flying through a surreal landscape made from petrol pumps, road signs and traffic cones.

It was directed by the Oscar-nominated Daniel Barber, with post-production and animation by Tom Bussell at The Mill, and features Johann Strauss' Open Road, Open Sky, sung by John Charles Thomas.