When creating Gran Turismo 5, the Polyphony Digital design team wanted an ultimate car, one not limited by the rules.

"Every race in the world today conforms to some sort of regulations, and every racing car is built to fit within those various regulations," said Kazunori Yamauchi, president of Polyphony Digital Inc. "However, the X1 is something new, created from a 'what-if' scenario, a dream we have long held at Polyphony."

The design team asked Newey, Red Bull Racing's chief technical officer and aerodynamic expert, to act as technical adviser and to help create the dream car.

"We all have a dream about pushing the boundaries, where the performance of the car and the experience of the driver take precedence over the rules," said Newey. "As a result, the X1 Prototype is dynamite to drive."

To test the virtual car, Polyphony brought in Red Bull driver Vettel. He drove the X1 around a virtual copy of Japan's Suzuka race course, shattering the real world record set by Kimi Räikkönen in 2005 by more than 20 seconds.

"Adrian's dream car handled brilliantly," said Vettel. "There are few tracks that reward bravery and commitment more than Suzuka, and I can't think of a better way to experience the pace and performance of the X1 Prototype than going through 130R at full throttle."