News: German sports car manufacturer Porsche has turned to its 5 million fans on Facebook to crowd source designs for a unique 911 car.

To coincide with the 50th anniversary of the Porsche 911 - and to celebrate the company reaching 5 million fans on their Facebook page - Porsche launched the 5 Million Car campaign. The project offered its social media community the opportunity to vote on design options for a one-off crowd-sourced car.

Fans were given the options to vote on specifications such as colour, wheels and spoilers. Porsche said that 54,000 fans cast votes via the Facebook page, selecting features such as a blue metallic paint, white 20-inch wheels and Porsche's "Aerokit Cup" package, consisting of a front apron with additional front spoiler lip.

Porsche unveiled the crowd-sourced car earlier this week and is now running another competition via Facebook, offering its fans the chance to drive it at Silverstone racing track in the UK. Nine runners-up will receive a 1:43 scale model of the car.

Previously when Porsche reached 2 million Facebook fans it celebrated by producing a one-off Cayman S car that featured a portrait of their social media fans on the bodywork.

More than 820,000 Porsche 911s have been built, since it debuted at the IAA International Automotive Show in September 1963. The Porsche Museum in Stuttgart, Germany is celebrating "50 years of the Porsche 911" through to the 29th September 2013, with a special exhibition featuring the history and development of the car.

Last month, installation artist Gerry Judah spoke to Dezeen about his installation for this years Goodwood Festival of Speed that features three Porsche 911s soaring up into the sky like rockets.

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Here's the press release from Porsche:

Porsche builds a unique model based on the votes from its Internet community
Five million Porsche fans on Facebook

Stuttgart. "5 million reasons to celebrate!" – It was this slogan that got sportscar enthusiasts on the Internet involved in designing a unique Porsche 911 Carrera 4S model. The sportscar manufacturer based in Zuffenhausen, Germany, launched the campaign to show its appreciation for the five million "Likes" it has received from fans.

Porsche is now running a competition on its Facebook page (facebook.com/porsche) until August 18 for the chance to win a drive in the one-of-a-kind 911 model at the Porsche Experience Center at Silverstone in the United Kingdom. Nine scale models of the vehicle are also available for the runners-up.

As part of the "50 years of the Porsche 911" anniversary celebrations, 54,000 social media users voted on their ideal design for the Porsche 911. Working with "Porsche Exclusive", the vehicle was painted in the unique colour Aquablaumetallic and kitted out with a range of equipment, including 20-inch Carrera S wheels with a special paint finish in white.

The unique model also features the "Aerokit Cup" package, consisting of a front apron with additional front spoiler lip and a new rear lid with fixed spoiler. A film set developed especially for this 911 model with the wording "5M Porsche Fans" along with custom-made door entry guards with the wording "Personally built by 5 Million Porsche Fans" make this vehicle a genuine original. It will soon be possible for all Porsche enthusiasts to experience the vehicle on the driving courses at Silverstone.

The runners-up in second place through to tenth place in the competition will receive a 1:43 scale model of the 911 Carrera 4S "5M Porsche Fans" vehicle. The competition is open to anyone with a Facebook account and a valid driver's licence.