I have seen something similiar. well sort of.
Many years ago whilst away in Newquay, Cornwall. A Sherpa van had a similiar picture painted on its side. This is where the similarity ends because the van belonged to a British Leyland enthusiast who was advertising his services. It was a painting of an Austin Allegro...........Estate.

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Apparently, if you have to ask why, you will never understand.
For some strange reason I took a picture.
Watch this space