The DP class of rail cars were operated from 1937 by the Tasmanian Government Railways (TGR). The early members of this class of rail cars were petrol powered, wooden-bodied rail motors while the latter units were articulated units. One unit of this class was maintained as a track inspection vehicle through to 1996.

This model was produced by Leon Kernan of Leon's Models where it is supplied in HO scale (1:87). This model has been downloaded from Leon's Thingiverse page and rescaled to N scale (1:160). Minor corrections have then made to ensure the ability to print this model at this scale. This has been performed with the full permission of Leon Kernan.