So, how did Layton and crew manage to make a U-Turn in Snowpiercer, along with the front ten cars of the train, to go back for Melanie? They are on a train track at the front of 1034 cars, not on a divided highway...
Also, when the aquarium car violently came apart, how did it not derail the entire back part of the train?
I really like the show but stuff like this drives me crazy.