Until I played golf in Scotland in 1979, I had never seen a course that didn't have the first nine returning to the clubhouse. I don't recall what my reaction was architechurally but I'm sure I was surprised not to have a place to buy something to drink and perhaps rid myself of what I had already consumed that day. Perhaps, as an archetypical American, I had doubts about the legality of it.
Then again, since up until that time most of my golf had been played on nine hole courses so there wasn't much choice about returning to the clubhouse was there. Now there's an original concept. Nine holes that just go on and on and on away from the clubhouse and when you've finished you have to find your way back. I think, given the temptation and justification for grand larceny of golf carts, this would probably have to be employed on a walking only course.
Does anyone know of a case where a development ran out of money and the course ended at some distance from the start? I remember playing Canaan Valley State Park back in the early 60s and before they finished both nines they started you on what is now five and you played back to number four.