If you have an iPhone, iPod, iPad, Android or other type of smartphone, you'll find a smorgasbord of travel applications at your fingertips. You'll have efficient GPS access, as well as apps that help you find everything from great places to eat and clean hotels to parks and other points of interests.
Weather applications keep you up-to-date on where the sun is shining and when storms could hit, so you can make the right decisions about whether to keep the top up or down -- if you're lucky enough to be traveling in a convertible, that is. Plus, you'll find plenty of games, quizzes and puzzles to keep any back seat drivers occupied.