ÒAerodynamicÓ simply means to be able to move through the air without creating too much friction. The more aerodynamically designed a vehicle is, the better able it is to move through the air. This means that the air flows smoothly over the vehicle without producing <a href="text">drag</a> to slow it down. It also means that the fuel is used more efficiently--it is not wasted by generating more power to combat the drag.