The first one was an Amtrak "Super Liner" train called the "Southwest Chief" headed east. It was moving at a good pace, perhaps 80 MPH as best I could guess. It was a train of streamlined double decker passenger cars and runs between Chicago and Los Angeles.
The location was on the main line double track about 35 miles west of Albuquerque and about 18 miles south of Interstate 40, right along New Mexico State route 6. I wanted to show that, but for these trains in the distance, the land looks as it probably did thousands of years ago.