[drislerfottor]

i think you will find that it will give the car more control in a straight line at high speed.

http://www.f1wolf.com/2008/08/the-f1...-ad-space.html

Red Bull - When looking at the fin it looks like they designed the shape to make the bull or the bull’s tail fit the car better. Who knows perhaps that was the real reason behind this fin design and everybody else got fooled and followed suit without really knowing why . http://www.formula1.com/news/technic...8/790/525.html

Since last season it seems most teams have found from their wind tunnel and CFD (Computational Fluid Dynamics) aerodynamic testing that elongating the engine cover provides clear advantages in terms of rear-wing efficiency. By improving the quality of airflow directed towards the rear wing, the fin increases downforce and allows the squads to run lower rear-wing angles, enhancing the car's top speed. BMW Sauber have adopted this philosophy with their 'mini' shark fin. Similar in style to the one found on McLaren's MP4-23,