McLaren MP4-21 - rear end changes 04 August 2006
Due to the high downforce requirements of the Hungaroring, the rear wing's flap sports a high incidence angle, while the outer ends of its main profile bend upwards to increase airflow pressure close to the endplates. This raises downforce, and the small drag penalty is of little consequence here. Another interesting change, first seen at the last round in Germany, is the wider vertical endplates connected to the flip-ups in front of the rear wheels. These raise downforce indirectly, by increasing the speed and pressure of airflow hitting the rear wing's lower profile.