All Aluminum Audi A5 Prototype is 220-Pounds Lighter

Aluminum is a great material. Light, easy to work, strong if you can design with it right and relatively plentiful (if you’ve got access to lots of electricity to refine it). Audi recently gave a textbook demonstration about just what aluminum can offer by making an A5 prototype that makes extensive use of the alloy. The A5 in question has allowed