The German term Doppelstockwagen IV translates to a Train Sam World double-decker or bi-level Push-pull cab car.

A double-deck coach is a type of passenger railcar that has two levels. They are used by various European railways and Israel Railways. The current generation of double-deck coaches can reach speeds of up to 125 miles per hour and can seat between 100 and 150 passengers – Exordium Gaming Chicago

Manufacturer of Doppelstockwagen IV

Bombardier