Gran Turismo 5's fastest car outclasses the rest of the PlayStation 3 game's line-up for a very good reason — it doesn't really exist.

But the Red Bull Racing X1 Prototype was designed to do one thing: be fast. It was created in the PS3 game to be the "fastest racing car on Earth, free of any and all regulations," and was crafted by a man who would know what those regulations are. You can see it in action for the first time in a new video of the X1 Prototype.

"X1 sees the marriage of virtual and real worlds as we explore the boundaries of our technology and aesthetic senses," says Polyphony's Kazunori Yamauchi. "The X1 Prototype Project has been motivated by curiosity and passion, powerful forces that brought together the best the world has to offer in design, physics simulation, racing car product technology and driving."

More details on the Red Bull Racing X1 Prototype car at the official Gran Turismo web site. Way more details.

X1 Prototype Full Reveal [Gran Turismo]