An ad in Berlin for the all-new 2012 Audi A7 Sportback looks fairly normal—except it was created with spray paint and takes up 10,800 square feet. Translated to English, the billboard reads, "Nothing is more inspiring than a blank sheet of paper. It is the opportunity to create something unique." The A7 Sportback is the German automaker's answer to the Porsche Panamera. Of course, that seemed like a good idea at Audi before its parent company, Volkswagen AG, actually decided to buy Porsche AG this year.