Don't know what they are looking at. They probably spotted the rarest diesel locomotive in history? That's a guess. It got transported to the Great valley some how.
Last I check the subway and the train were made to be ridden in not outside as this video will demonstrate. Don't mind the comments posted on this website unless you curious.
It turns out that in other countries you can get on public transportation for free, but there's a price to pay for getting a free ride. This video demonstrates all of those factors.
There's a good chance I might see this today don't know when though. From what I heard it's good and is filmed through a video camera the same way the Blair Witch Project was filmed. It's dubbed as the scariest movie of all time.