Audi A9 Concept dreams of what future Ingolstadt four-door-coupe could look like
Following the success of the Mercedes-Benz CLS, many luxury automakers are now creating what is known as a four-door-coupe sports sedan. Porsche has its Panamera, Jaguar has its XJ, and Aston Martin has its Rapide. BMW is working on its own four-door-coupe sedan, which will be influenced by the new BMW Concept Gran Coupe and Mercedes-Benz is [...]
