One of the factors that automotive engineers must consider is wind drag. The less wind drag, the more efficient the car will be. They perform many tests in wind tunnels, then refine their designs and test again. Using simple materials, transform your middle and high schoolers into designers and engineers as they work together to create their own low-drag cars, then test them in a class wind tunnel. To adapt this to the Next Generation Science Standards, have teams compare their results then work together to create the most efficient design possible.