If your plans involve spending hours sitting in the car, you'll want to prioritize comfort. That's why we advise packing a cute, coordinated sweat set. We're loving the Mayfair Group Empathy Always Crewneck ($98) and matching shorts ($68). Keep the sun out of your eyes when it's your turn to drive with the Illesteva Lisbon Sunglasses ($240). And you won't be sorry for bringing along a small backpack, like the Fjallraven Kanken Mini ($70), to stash your keys, wallet, and camera.