Aerodynamic: All hardshell-carriers have aerodynamic patterns that enable them to cut throughout the wind very easily. You may only obtain a slight drop in mpg. We managed to retail store two snowboards, two pairs of skiis with four helmets and all supplemental tools and baggage. If that isn't many space http://cars09510.ka-blogs.com/12541905/the-2-minute-rule-for-roof-cargo-carrier