+1 for the GPS. I use a Garmin 605 which lasts a couple of days between charges. I recharge it in motels or use the razor socket in a camp site. I also use a solar charger and have never had any problems in keeping it going. It's not much good for serious route planning and you can't really see what's outside it' narrow picture so maps are a necessity. As mentioned above, it's best helping you find your way through built up areas or in finding motels/campsites etc.