Sauber have been asked to remove their horn type towers which they had used on their cars for aerodynamics during the french grand prix 2006. The FIA cited that the towers( suspiciously like the twin petronas of Malaysia(Petronas !!!)), would block the view of drivers and were hence dangerous. Sauber has decided not to contest the decision.
sauber , f1 , formula one , fia , aerodynamics