The train with the main characters arrives in St. Petesburg Vitebsky railway station and then keeps going. In real life, this station is terminal and none of the trains can continue to move in the same direction.
During the stop in St. Petersburg the train toilet is opened; however, toilets are always closed in old Russian trains due to «sanitary zones».
The train of the main characters and the train in Petrozavodsk railway station have the modern design of Russian Railway Company. The action takes place in late 1990s and early 2000s when Russian trains didn't have such a design.