Polyphony Digital, creator of the Gran Turismo racing game franchise, has teamed up with automakers all around the world to further blur the lines between video games and reality. Top makes like BMW, Mercedes-Benz, Alfa Romeo and Aston Martin have designed dedicated concept vehicles for the game's sixth installment, ready to be unveiled for real when it hits on its now-confirmed December 6 release date.

Each of the concept vehicles will be recreated for real in time for the game's launch under the title Vision Gran Turismo, as working prototypes--but gamers will also be able to download the vehicles from Alfa Romeo, Alpine, Aston Martin, Audi, BMW, Bertone, GM Design, Honda, Infiniti, Italdesign Giugiaro, JORDAN Brand, Mercedes-Benz, Nike, Nissan, Peugeot, SRT (Chrysler), Volkswagen and Zagato as extra game content.

It's by no means the first time some of these brands have teamed up with Gran Turismo--Nissan has released Gran Turismo-branded versions of its cars in the past, Peugeot's partner Citroen worked on the GT Concept and sportswear maker Nike collaborated with Polyphony on the Nike ONE for Gran Turismo 4--but it's the first time so many have worked with the game's creators, celebrating GT's 15th anniversary this year.

Among the cars destined for digital and real-life stardom are the BMW Vision Gran Turismo, a look into the hot hatchback's future with the Golf GTI Vision Gran Turismo, and the Alfa Romeo 6C Biposto Vision Gran Turismo, celebrating an iconic 1930s model.

Some of the auto industry's top designers have got involved, including Adrian van Hooydonk  from BMW and Klaus Bischoff at VW. van Hooydonk revealed he's been a fan of the GT series from the start, adding "the increased level of realism in visualization and the authentic driving experience in Gran Turismo 6 is incredibly impressive."

Meanwhile, entertainment website ZAP2it has confirmed the rumored Gran Turismo motion picture is now for real. The movie is now in the hands of producers Michael de Luca and Dana Brunetti, who both worked on Facebook film The Social Network.

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