I remember watching this movie in the 90’s. I can remember the movie as being animated with typical cartoon human characters. I remember one of the first scenes as having a boy being chased by a steam locomotive pulling a train of passenger cars. The train chases him across a lake. The boy escapes to his home, then answers a knock at the door only to see that it is the train. He wakes up from the dream, picks up a toy locomotive and mutters, “Trains”. The film was, I believe, a Christmas type film and was a bit on the dark side as far as those films go. Maybe someone else has seen it?