I can't speak to this specific make of GPS, but I've taken my Garmin on several trips and it really adds to the trip. Not only does it give me a general sense of where we are, it also allows me to track speed, average speed, peak speed, and similar things. If you load Amtrak stations in advance, you can choose them as "destinations" to see how far away they are (although mileage won't be quite right, it will try to route you via roads vs. tracks). Main thing you'll need is a AC to 12V adapter, which are cheap and can be purchased where cell phone chargers are sold, or your local Radio Shack. As a disclaimer, I have used mine in a sleeper where I can leave it hooked up - if you're traveling Coach it might still be fun to have, but you'll want to put it away when you're not around.