Mist, Ghost or Computer Graphics?

Supposedly this is a car commercial that never aired. I'm thinking that it is more probably a very good student project using Computer Graphics.

About 2 seconds into the "commercial" notice something moving along the side of the car, like a ghostly white mist that looks humanish.

The subtly makes is so believable. Movie animators could learn a bit from this.

If computer graphics couldn't do this kind of thing I might be a bit spooked.