Why do Audi A2s have such unique body designs?

I've noticed that Audi A2s have very distinct body designs compared to other vehicles. What is the reason behind this design choice?

Audi wanted to create a vehicle that was both lightweight and aerodynamic. The unique design of the A2 helped achieve this goal, making it more fuel efficient and environmentally friendly.

The unique body design of the Audi A2 was also a result of extensive research and testing, aiming to optimize performance and stability while reducing drag and noise.

In addition to the practical reasons, the unique design of the Audi A2 also served as a distinguishing factor, making it stand out in the market and appealing to design-conscious consumers.