Originally Posted by AlexF

Well it is a BMW USA video

http://www.bmwusa.com/Standard/Conte...g/Default.aspx

They do not say anything about the fliming of it sadly.

The reason I think its CGi are that the combustion begins miles away from the camera, which would likly be mounted under the piston. It just doesn't look like the images I produced when working on a Ricardo single cylinder research engine at Ford.

Alex