I found this on craigslist. Here is a great opportunity to buy an original prefab gas station. I am willing to provide free help in the form of experience I have had in moving similar buildings.
https://columbus.craigslist.org/tro/d/two-buildings-for-sale/6359905367.html
These are Union Metal Manufacturing prefab buildings. Here is a link to this style in a Union Metal filling station catalog circa 1930.
http://www.enarco.com/union/union_55b/magazine/55b.html#page/20