Sometimes, something works so well we don't even see it.  I'm a regular traveler on Amtrak and it works pretty seamlessly. 

I make reservations on the web.  The reservations page is intuitive and easy to use.  If you buy your tickets online, you get an email with a link that makes it just as easy to cancel them if your plans change.

Amtrak is an early adopter of .mobi.  This means if you're in the taxi on the way to the station, you can get access to the Amtrak website (make reservations, check train status) specially built to fit in the tiny window of your phone.  Just type in www.Amtrak.mobi instead of www.Amtrak.com.

Amtrak was also an early adopter of the automated ticket kiosk in the station.  Unlike airports, you can arrive about 15 minutes before your train, pick up the ticket you bought in that taxi, and make your train.  Except for major holidays, there are enough kiosks around that there's never more than three people in line for one.  You can count on getting ticketed quickly.

Also unlike air travel, at least in the northeast corridor, the trains are almost always on time.  And, so far, they haven't had big increases in their fares.  There are power outlets, so you can plug in your laptop.  There aren't transmission restrictions, so you can use your phone or laptop air card.  And, of course, the stations are in the center of major cities, rather than 30 minutes or an hour's drive away.  When traveling between Washington, Philadelphia, New York, and Boston, I've given up flying altogether. 

Many thanks, Amtrak.