You've probably seen in road trip movies when the family hysterically overpacks so much that they have to mount an additional bag on the roof. Well, that's based on reality, friend. Now that you're an adult, you're going to overpack all the time. Fortunately, this waterproof, aerodynamic storage bag is easy to mount on your car. It's practically a status symbol, screaming "Look at me! I have reached an advanced age at which I have many cumbersome but necessary possessions!"