THE high-performance Infiniti Crossover designed by, and built for, Formula One world champion Sebastian Vettel will make its debut in concept form at this month's Frankfurt Motor Show.

As the first-ever Vettel-badged road car, the FX Sebastian Vettel version is the lightest, fastest and most aerodynamic Infiniti FX yet.

It reflects the F1 star's desire for a high-powered crossover that he can drive on his home country's derestricted Autobahn.

Based on the V8-powered FX50S Premium, the concept features changes to the engine, suspension and body, with some key aerodynamic input from Red Bull Racing.

The one-off model also gains an interior personalised to Vettel's taste.