With the right detailing it could be an outer space station type thing for Battle Fleet Gothic or Firestorm Armada (centrifugal gravity you see)
Also a few together standing upright with some odds and bobs (for bowsers) would make a modern looking fuel station (Caltex, shell etc), just also add the kiosk where you pay.
4 together with a platform on top (to cover the gaps) would make a great base for an oil refinery.
Those are just off the top of my head, i'm all out of ideas now
