If like myself and hubby, you plan to drive across America, obviously it's easy in these days of Sat Nav, but if like us you rely on good old maps and directions etc, we've found that the Rand McNally website is brilliant. It lets you plan your trip from start to finish, gives mileage calculations, estimated times of the journey, directions and a map of how to get there etc. You can plan your start and finish points, adding stops or editing your route wherever. We used this a few years ago when we flew into San Francisco and out of Los Angeles. In between we visited Napa, Tahoe, Yosemite, Sequoia, Death Valley, Vegas, Grand Canyon, Lake Havasu ..... the website sorted the whole trip out for us and we followed it to the letter. We intend to use it again this year when we fly into Vegas, out of San Franciso, doing various National Parks and other places in between. If you don't have Sat Nav try it - it's very good.