My poor contribution is a Sleazy used car lot, office is (was) an old trailer. It has since been removed due to a push by equally sleazy politicians who declared 'dominant domain'.
I am looking forward to building a prestigious Sales Office that handles only Antique and Classic Cars - Duesenbergs, Packard's or Cadillac's, Bentley's or Rolls from the Big Car era from the mid-30's. It will require a decent building...trailers are out. I recall from my much younger days walking past a huge Auburn each day on my way to HS, poor thing was on blocks, no tarp or cover of any sort. It was a convertible, top up. I always wonder what happened to it. But another will appear on my layout some day.