Audi looks to Hollywood for the engine note of the future

Audi is drawing direct inspiration from Hollywood blockbusters in its pursuit of a suitable 'engine' sound for its forthcoming e-tron electric cars.

The manufacturer has decided that the new models – which are virtually silent up to speeds of 15mph – must emit a noise to alert pedestrians of their presence.

Apparently the firm's acousticians are paying particular attention to the engine note used in the Audi RSQ, a fictional electric model driven by Will Smith in the 2004 film, 'I, Robot'.

Click below to get a brief indication of what the 2012 e-tron might sound like.