it looks like photoshop. I would like to see the close ups because that would be a pretty amazing paint job.
Just a thought,
Did they park the car so that the sun was going the same way as they painted the highlights and shadows on purpose? and take the picture so that we were looking at the engine from the same angle it was painted from? Seems a little unlikely. If that were a paint job... it would look really bad from any other angle...
My thought is that they took 2 picture from the same spot, one with the hood.. one without. Actually you could pretty easily do it with the hood open as long as the sun is facing into the engine.. otherwise the hood would cast a shadow into the engine compartment.. (hence the orientation of the photo)
Sorry to be so skeptical.. but it doesnt seem likely.. and I can easily duplicate that effect.