I'd love to do a bike and train trip overnight, but the sleeping accommodations are ridiculously expensive, and I can only sit in the seats for about half a day, that is my limit. For a long trip, air travel is so much cheaper than a sleep room on amtrak. But packing the bike is so much more hassle. On amtrak, my folder and panniers go onboard easy. I'd like to do a long trip where I can train a few hours, then bike and camp overnight and bike a few days, then perhaps train where the rides are long and boring or across desert areas, but it's still not economical via train I think.