This was a future-based animated movie that was located throughout space. In it, a young boy who I think had a robot friend travelled on a train which was called the 777 (it had 777 on the front of the train) and it went all throughout space. There was also maybe one or two sequels, and it used to come on the sci-fi channel late at night. Please let me know the name of this film. I've been trying to figure it out forever
