In 1940, a grinding car was built for the Aachen tramway by the Schörling company on the basis of an old railcar from 1895. The vehicle was designated TSS1 and was in service until the end of operation in 1974. The vehicle was also part of the farewell parade.
Except for the 2x2x2 roof tiles in orange, the model can be built entirely from original bricks. The model is not motorized. However, this should be feasible by means of Circuit Cube. Space inside is available.
Similar vehicles were in service in other cities, both standard gauge and meter gauge.