The star of Infiniti’s stand at the 2011 Frankfurt Motor Show in September, the FX Sebastian Vettel version featured design, engineering and aerodynamics upgrades inspired by the Red Bull Racing champion and Infiniti Global Brand Ambassador.

Infiniti executive vice president, Andy Palmer said: ‘Doing the FX Sebastian Vettel version for Frankfurt was fun, but it’s also a kind of pilot. It’s about our equivalent of (Mercedes-Benz) AMG or (BMW) M Cars. We wanted to test the organisation and see if it could cope with this type of special version. Sebastian’s FX demonstrates we are able to do low volume specials and the FX Sebastian Vettel version is one of the first that will go to market.’

The Frankfurt concept car was born out of a conversation between Sebastian Vettel, already an Infiniti FX driver, and Infiniti Chief Creative Officer Shiro Nakamura at the 2011 Geneva Motor Show. The 5.0-litre V8 was tuned to provide 420PS, and with a high downforce aerodynamics package developed by Infiniti in collaboration with Red Bull Racing, the 300km/h crossover was billed as the most focused and exclusive sports crossover ever built.

Details of the production version including availability, volumes and prices are yet to be confirmed.