Here is a file clip from May 26, 1934. On this date, the Burlington Zephyr ran Chicago-Denver in 13 hours, dawn to dusk. It peaked at about 112 mph. At the time, 115 mph was the North American record. The average speed that day was 77 mph. As you can imagine, we have come a long way since – backwards. I am sure today’s average on the same tracks is well below 60 mph.