If your road trip copilot is your pet, it's important that he's comfortable and secure for the long haul. While you can hit the McDonald's drive-through, he's going to be more difficult to please (though no dog I know has ever turned down a french fry). We've rounded up our top picks to keep him happy, safe, and motion sickness-free when you hit the blacktop for your long weekend adventure.

Source: Flickr User wsilver