Sometimes you have to be patient to get "the" image from a trip. I found this just after starting off for home after a week shooting on the Outer Banks. Comments appreciated.
I was almost frightened to say it but as two others have, including Tim Rudman, I too thought it was lith. Might have been worth getting both top and right side in. Alternatively the background may have added to the old pump feel and look and so stepping back was also an alternative.