[[ASIN:098469210X the Next EXIT 2012] I pre-ordered this 2012 edition from Amazon back in 2011, and it arrived a couple of weeks ago. Have not hit the road with it yet (will, in a couple more weeks), but have arm-chair reviewed it against what I know about interstates that I use frequently. For my local/most used exit, it was right on the money . . . except for still listing one restaurant that went belly-up recently, clearly due to the poor economy and reduced traveler visits. That happened late in 2011, I expect it will be corrected in the 2013 issue.
Physically, the book is just about 1/8" smaller than 8-1/2 X 11 inches, and about 1/2" thick. Anything that will carry a half inch stack of standard 8-1/2" x 11" copy paper will hold the book. The paper is about the same quality as an ordinary city telephone book. The pages are thick enough that the next or previous page does not show through. The type is fairly small, but adequate for a passenger (A passenger is a person who is NOT driving) to look up & understand stuff. If you are alone in your car or truck, for crying out loud, pull off at some safe spot!
It takes a little study to figure out how the book is organized before you actually use it during a trip. I suggest you think of a stretch of Interstate that you know well, look it up in the book, check your travel direction, and see what it tells you about that well known stretch. Find a restaurant, a filling station, a hospital, a park, etc. Remember, if it is NOT on an Interstate, it won't be in the book! It shows handicap accessible facilities very nicely.
My bottom line is that I suspect I will be getting a new one each year, as long as my wife and I are hitting the Interstates to see friends, family, and places.