'The Castle'

My wife and I saw this mobile eatery for the first time today as we visited the new retail park on the edge of Inverurie.

We didn't try the food, but were impressed by the inventiveness and the imagination that brought about this wonder in stainless steel. One of the people serving behind the counter leant out as I was taking this photo to give me the 'thumbs up' sign (zoom in to see)!

Is it an entirely original creation, or do similar examples exist elsewhere?