The MEC, in the 70s, modernized a heavyweight baggage - coach to a steam generator car, which was used in conjunction with its business car for executive service. Not long before Guiiford acquired the line they added a former Amtrak, nee-Atlantic Coast Line coach to the consist, though I do not know what its configuration was. Both heavyweight cars were set aside when Guilford acquired the line and placed in indoor storage. The last I heard (a couple of years ago) the cars were for sale but I do not know if anyone has acquired them.
MEC 322 Mod. HW steam generator - coach
http://rrpicturearchives.net/rspicture.aspx?id=183798MEC 333 business car
http://rrpicturearchives.net/rspicture.aspx?id=692690The Richmond Fredricksburg & Potomac took a heavyweight coach, numbered 20 (ex-201, exx-531, nee-92), and rebuilt it as a generator - kitchen - crew car, for use with their modernized heavyweight business car, named
ONE. On occasion their HW Safety Meeting - Classroom car #28, was also used...
http://rrpicturearchives.net/showPicture.aspx?id=566713http://rrpicturearchives.net/rspicture.aspx?id=278627http://rrpicturearchives.net/rsPicture.aspx?id=176406As for a prototype shortline that you could emulate consider the Aberdeen Carolina & Western. The owner is a railfan and has a strong affinity for passenger equipment. He has gathered together four business cars (the latest being Green Bay & Western 600), diners (including a former PRR Budd twin-unit diner and a former Pullman restaurant - parlor, a couple coaches and even a couple of dome cars. Only one of his cars, the former Burlington dome - coach
Silver Brand, saw use on Amtrak. His collection (which includes RF&P 28, mentioned above) can be seen at the link below:
http://passcarphotos.info/Indices/A1.htmIts worth noting that the ACWR acquired some of the cars for use on a dinner train that it ran for a time, which could be something to consider as an alternative to an executive train. After the dinner train shut down the owner has ran a couple of specials using the cars that he has and the line is currently working on a new railcar facility that will specialize in the repair and restoration of passenger cars. This, I believe, is being done to help fill the gap that has been left by the Lancaster & Chester ending such services on their line with the line being acquired last year by Gulf & Ohio. It is something to consider for any shortline and could help to justify the occasional passenger car being staged, either heading too or coming from such a car shop.