Corrected entry: In the scene within the "dream limbo", Cobb convinces his wife to kill themselves by lying down on the railway track and getting by a train. This would be impossible because they were in limbo, there should have been no one else there to drive the train.
MovieMatt
15th Sep 2010
Correction: It's a dream, where they've been creating entire elaborate buildings that simply spring into existence according to their whim. Creating a train that runs on automatic would be a simple task by comparison.
Tailkinker ★