ok, it’s an advert, but it’s a pretty unusual one; it includes: … film [of] the combustion process of a BMW M3 V8 engine [created] without using computer generated effects.
Filming the process was not easy. Manifolds were cut, cylinders shaved, and lighting holes were drilled in three complete M3 V8 engines for Director Raf Wathion to use special cameras and lenses to capture the action. via this
Lovely, esp. without SFX. A bit short though. I bet it looks amazing in HD.