Sh!+. Grown people don't dress that well these days.
I've flown a few trips over the western states in our caravan. Flying around 5-10k agl you get a good view without losing to much detail. I saw several trains around Montana/ Idaho area that were at least 2 maybe 3 miles long. I lost count at 230 something cars (going wrong way too keep count... total length had to have been around 250ish??). Several were autoracks and several flat cars that looked to be about that same length. To be sure, there were a lot of shorter cars as well, but it was a REALLY long train. I was really surprised considering the amount of hills in that area, but I guess autoracks aren't very heavy either.