Go to the "special features" section on the DVD. Then go to the bottom menu and hit right a couple times. A gun will show up. Click on the gun. This will take you to a hidden page with some cool features. But turn your stereo up LOUD to get the whole effect.
Get into the Special Features.
Enter the Behind the Scenes Option and into the second page of the Behind the Scenes featurettes.
Highlight the "Stills" picture, then hit your left arrow.
This will bring up a train pic. Hit enter for a 1 and 1/2 minute bit on the railroads used.
All easter eggs were generously submitted by Jack Straw