Beautiful and Powerful: Audi's E-Bike Wörthersee

4 of 9
Audi Electric Bike

credit: Audi

Here's a close-up of some details.

The frame and the swinging arm that holds the back wheel are made of carbon fiber-reinforced polymer (CFRP). The same material is used for the 26" wheels, which feature an innovative "Audi ultra blade" design with broad flat spokes for an optimized transmission of pedal power. "We were able to demonstrate with the choice of materials just how closely design goes hand in hand with expertise in ultra lightweight construction," Hendrik Schaefers comments.