 FACT: In one of the opening scenes we see a #2 train, however this  train is not a real #2 train. The real #2 trains run on the IRT  line, these trains are characterized by being narrower, the train we  see in the scene was probably a BMT line train; the BMT line trains  look more like the one in the scene and also have a chassis as wide  as the one in the shot.