A little background here on "Simply Railway". The guy who makes these videos is a native of France and used to work for SNCF. Most of his videos over the years were mostly on European trains. He now works for Alstom (presumably on the ACELA II project) and is residing in the US. Because of this most of his recent videos have been centered on US trains. In his videos he uses captions due to his thick French accent. Below is a link to his recent YouTube Q&A video.
Then it comes to be that the soothing light at the end of your tunnel
Is just a freight train coming your way