Oh! I just realised something! I could be wrong, but you know, this is just what I think. And maybe some other people here have said this already, but this may back up what they said.
Look carefully at this picture. Now we can all see it in higher quality, do you all notice how quickley it's been done? Right.
Now, look at the difference between the Shell logo, the background, and the drawn soldiers and scenary in the foreground. This concept art is a mix between brush strokes and photo manipulation, all to set the scene, which is the whole purpose of concept artwork. :P For this, I really don't think OWI are promoting Shell at all - It's simply used as an example.
Early production days, huh?
