Wooden Railway B.A.R.T???

I highly doubt that it's a custom. To try and create (at least) 2 almost PERFECTLY SIMILAR models, to mould a plastic container, to factory-accurately attach said plastic to the cardboard, among MANY huge other challenges. Not to mention BARELY documenting it, as well as the only source of it being a Wikipedia image, a platform that is designed for documented facts.
Obviously this wasn't a Learning Curve item, but it certainly was a purchasable item.