I was in SLO this Sat, and happened by the tracks on my way to Del Monte. A train was idling and looked like it had been dropped directly from The Great Gatsby. I whipped out my camera and went to investigate. Well, it turns out that there’s an organization of people who own private, vintage railroad cars!! This group had started out in Seattle (I think) and was ending up in L.A. Apparently, once they were in L.A., the train would be broken up, the cars hitched to various other trains, and they would go their separate ways.
The group is called AAPRCO which stands for the Association of American Private Railroad Car Owners. The people I saw were very nice in sharing information about the trip.