When the train carrying Emil from the fictional "Neustadt" to Berlin stops at the intermediate station where all the passengers except Emil and Grundeis, the man with the bowler hat, leave the compartment, its engine is a 2-6-0 Deutsche Reichsbahn Class 38, formerly a Prussian P 8 passenger engine. When the train leaves that station, it is suddenly a DR Class 17, formerly a Prussian 4-6-0 S 10 express train locomotive. When the train enters Berlin's Zoo Station, it has reverted back to a 38/P 8.