The external aerodynamics plays an important role in the development process of modern automotive. The vehicle's performance (e.g. fuel consumption), its stability (e.g. cross wind sensitivity) and the vehicle's cooling system (e.g. engine cooling) are all influenced by aerodynamic loads. Aerodynamic styling of a car is one of the most crucial aspects of car design-a highly complex phenomenon, encompassing the task of an artful integration of advanced engineering and stylish aesthetics. A lot of emphasize is laid on the aerodynamics in car design as an aerodynamically well designed car spends the least power in overcoming the drag exerted by air and hence exhibits higher performance - cruises faster and longer, that too on less fuel.