The problem with ex-railway carriages is that they have extremely limited uses - councils will not approve them as dwellings under any circumstances because the ceilings are too low, they may not meet electrical and insulation codes and they're generally too difficult to bring up to standard for habitation purposes; they are also prohibitively expensive to move by road. It's a shame because they would probably make a great boutique B&B type thing on a country property adjoining a busy railway line - if you could get approval for their use that way.
Nice to imagine 'what if' though.
Remember heritage operators were given first bite of the cherry. Community groups also have had some carriages "given" to them. Perhaps one of them got it?Do we know if any of the carriages sold?
Interesting the First Class lounge ex the Queenslander section of the Sunlander wasn't in the catalogue.