It is my understanding the "fish car" in Spearfish, SD is a re-creation using an old baggage car and Federal tax dollars. South Dakota was in the odd position of having Federal funds earmarked for historic preservation of transportation related items and little interest from the general public.

There's also the DL&W MU club car that is displayed as a "trout car" in Roscoe, NY:

http://owrhs.org/museum.html