BBC F1 technical analyst Gary Anderson takes a close look at a 2012 Lotus Formula 1 car and explains how and why the cars are designed for maximum efficiency.

The aerodynamics of an F1 car has two vital jobs on the racetrack - producing downforce and controlling drag. Downforce pushes the car's tyres into the road and helps it travel faster through the corners, while reducing drag - the wall of air resistance the car disturbs as it races forward - also helps increase straight-line speed.

Former Jordan, Stewart and Jaguar technical director Anderson will review each race across BBC Sport by way of pin-pointing five key aspects that emerged from the weekend's events,

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