Formula 1 is an amazingly technical sport and car aerodynamics are enormously important. The whole race is a juggling act between high downforce, keeping the car stuck to the road so that it can corner as quickly as possible, and low drag, allowing the car to reach top speeds in the straights.
The level of importance of aerodynamics can be seen beautifully in this close-up of one of the Williams’s front wings. All these little curves and folds are, presumably, designed to create optimal airflow across the front tyres and generate exactly the expected downforce on the front of the car. Gone are the days of a simple aerofoil section!