4mm scale / OO gauge Roadrailer model articulated truck
The Roadrailer project didn't go well in the UK. The idea was a good one, as road trailers could lower a set of railway wheels onto the track and a number of them could be coupled together and hauled by a locomotive.
This 1960's project, was quickly abandoned and the trailers scrapped.
This model was on display at the, April 2019, Scalefour event in Wakefield