Audi's new A5 coupe will usher in a new era for the brand when the covers come off it at the Geneva motor show next month, and the firm is hoping to build interest in the launch with a dedicated A5 website, launched today.The new microsite can he found by clicking here, or by visiting http://microsites.audi.com/audia5/html/index.php. There's very little specific detail about the new car there, but there is an image of the new car taken from above, which enlarges when you complete the registration process. Audi is also giving away 555 1:43 scale Audi A5s as raffle prizes for anyone who wants to submit their particulars. The new A5's a crucial car for Audi, not least because the platform that underpins it will go on to form the basis of the next A4 saloon, and will be adapted to serve in other future Audis with longitudinal engines. It's a departure for the brand because it has been designed with a longer wheelbase, and with the engine accomodated at the front, but also largely within that wheelbase, which should endow the A5 with much better dynamic qualities than we've been familiar with from Audi in the past.