What is the purpose of the Audi A2's streamlines?

I read that the Audi A2's design includes aerodynamic features such as streamlines. What exactly is their purpose and how do they contribute to the overall performance of the car?

The streamlines on the Audi A2 serve to minimize air resistance and improve fuel efficiency. They help the car glide smoothly through the air, providing a more efficient and stable driving experience.

In addition to aerodynamics, the streamlines on the Audi A2 also play a role in reducing wind noise while driving. They help to redirect and minimize airflow around the car, resulting in a quieter cabin for a more comfortable ride.

While the streamlines on the Audi A2 may seem like a small design feature, they actually contribute greatly to the overall performance of the car. By reducing air resistance, they allow the car to achieve higher speeds with less effort, making for a more efficient and enjoyable ride.