Saving £20 and cheaper then the normal version from what i can find, Not sure if the below code can be used even if you dont but special edition?
* Race Driver: Grid - Special Edition, exclusive to Play.com, includes the game, a "Making Of Race Driver: Grid" DVD and a hardback artbook
* Unlock the in-game Play.com exclusive Aston Martin DBR9 using the following code: P47203845
Grid will take players to beautifully realised and dramatic race locations over three continents to compete in an unprecedented variety of racing events. Packed with the most powerful race cars - new and classic, circuit and drift - players will compete to conquer the most prestigious official race tracks and championships and then go beyond to compete in challenging city-based competitions, through to road events and urban street races.
In Europe, race gamers will compete on the greatest official tracks in prestige Marques including Aston Martin, Koenigsegg and Pagani. Iconic cities across the U.S. - including San Francisco, Washington DC and Detroit and each with their own atmosphere and events - play hosts to diverse street races. In the Far East, Japanese racing culture sets the tone where night races, including Drift racing, take drivers through neon illuminated cities and to outlying mountain roads
DONT FORGET QUIDCO