I also travel a lot. My parents live in Massachusetts and my husband's family lives in Pennsylvania, so we are constantly going from one place to the next. I read in the car constantly, as well as on various trains and buses that I use to get around. That's another reason why the kindle is so convenient (can you tell I am obsessed with it?). It's light and I have tons of books loaded on it.
Speaking of the kindle, while I'm working on reading World War Z, I'm planning on reviewing the Kindle Touch. Stay tuned!