What innovative materials were used in the construction of the Audi A2?

I heard that the Audi A2 was made with some groundbreaking materials that made it lightweight, yet still strong and safe. Can you tell me more about these materials and how they were incorporated into the car's design?

The Audi A2 utilized an aluminum frame and magnesium body panels, resulting in a car that was about 40% lighter than its steel counterparts. This helped improve fuel efficiency and overall performance. My advice is to seek out an A2 with this feature if you're looking for an environmentally friendly vehicle.