Some trips are easier to communicate from than others, and as previously expressed, I find it very difficult to work on trains.
Last week, I rode from New Orleans to NYC, a two-day trip (in a roomette!). I stared out the window almost the entire time, and made these notes.
They form two lengthy (linked) threads on Twitter, but I will edit them for elegance soon.
However, if you prefer a little more brevity, Travelogues contains 9 substantially shorter train journeys: