This topic has been beaten to death I'm sure. Heck I think grass is growing along the manicured U.P. ROW that goes through Cedar Rapids waiting for a train, especially coal hauls, to run.
http://insideenergy.org/2016/0...it-railroad-workers/
Check out a follow-on story at article bottom, where a Smithsonian exhibit about Green Energy closed in North Dakota museum. Yeah, I would be upset too.