The FX “concept” that was unwrapped at the Frankfurt Motor Show was supposed to be a one-off model designed with input from 2010 (and, subsequently, 2011) Formula 1 world champion Sebastian Vettel.

However, Infiniti did what everyone expected, and less than a month later confirmed that the tweaked, 420HP luxury crossover would indeed enter production, albeit in limited numbers.

Now, as part of the celebrations for Sebastian Vettel's 2011 championship, Infiniti is offering European buyers of the FX the chance to get a unique insight of the inner workings of the Red Bull Racing Formula 1 team.

With Red Bull's Sebastian Vettel having clinched the second consecutive drivers' championship crown after the results of the Japanese Grand Prix on Sunday, it was only a matter time before Infiniti would confirm what we already suspected after the debut of the FX concept in Frankfurt: the crossover that bears his name will enter a limited run production.

The announcement was made by Nissan Executive Vice President Andy Palmer at an interview for the company's corporate blog.

Infiniti is relying on its partnership with Red Bull Racing and the blessings of reigning Formula One World Champion Sebastian Vettel to promote a sportier image for the brand

At this week's 64 International Auto Show in Frankfurt, the Japanese automaker put the spotlight on a one-off Infiniti FX50 designed in conjunction with Vettel. The special crossover features a host of aerodynamic, styling and mechanical improvements, all designed with Vettel's input.

After many teasers but only six months since the idea surfaced during a conversation between Infiniti’s Chief Creative Officer, Shiro Nakamura, and Red Bull racing driver Sebastian Vettel, the Japanese firm's one-off FX50 Performance Concept dedicated to the reigning Formula One World Champion has been fully revealed.

Sebastian Vettel, who already owns an FX as Infiniti's Global Brand Ambassador [sic...], cooperated with the company's engineers to create the concept model that sports several changes over the standard production version both mechanically and cosmetically.

We are now less than two-weeks away from the opening of this year's edition of the Frankfurt Motor Show and Infiniti decided to provide us with a better look of its high-performance FX50 study designed by, and built for, Formula One World Champion Sebastian Vettel.

The new pictures show that along with the revamped front end that sports a carbon fiber apron shaped like an F1 car's front wing, the carbon fiber mirrors and side sills, the one-off FX50 also sports a new rear bumper design with a diffuser made out of –you guessed it- carbon fiber.

When the doors open to the 64th IAA International Motor Show on September 13, Infiniti will premiere a new concept study that takes the firm's partnership with F1 racing team Red Bull to the next level.

The Infiniti FX50 Performance Concept was inspired by reigning Formula One World Champion and Red Bull driver, Sebastian Vettel. The 24-year old German, who is Infiniti's first ever Global Brand Ambassador, is said to have helped in the design of the FX50 study.

According to media reports, Infiniti is planning to unveil a limited edition of its FX50 SUV at the Frankfurt Motor Show next month. The new edition is inspired by last year’s Formula 1 world champion, Sebastian Vettel. Infiniti already sponsors the Red Bull F1 cars, which are powered by its partner, Renault, and wants to get the best out of this partnership.

Four months ago, before the Shanghai Grand Prix, the 24-year old world champion who is already an Infiniti “ambassador” drove an Infiniti FX50 in a demonstration (as you can watch in the video that follows) describing it as “sporty” and “very well handling”.