How about the T.T.C. subway in Toronto, Canada? Probably not terribly likely, but I wanted to at least make the suggestion. Mostly tunnels. Many of the stations are the same, architecture-wise.
It would give me somewhere to drive this, when it's done! Fun Fact: The Gloucester is the same subway car featured in the children's book "Jonathan Cleaned Up - Then He Heard a Sound (or Blackberry Subway Jam)" by Robert Munsch!
