I can tell you from experience that it takes a lot of research and planning to find out just what lies along a particular route that's worth making a stop for. But OnTheWay, a new trip-planning website, is set to relieve detourists of some of that work.
Enter a starting location and a destination and, using Google Maps, OnTheWay will point out what's available along your given path.
Unfortunately, the database doesn't appear to be all that robust, and the site is lacking a host of useful features, but this is one site to keep an eye on for any avid road tripper.