Please be upstanding for the most powerful factory-built roadster in the history of TIME - the Bugatti Veyron 16.4 Grand Sport Vitesse.

So, what sort of numbers does a convertible need to be the fastest in the world? 1184bhp and 1105lb ft. That’s 197bhp and 183lb ft up from the cooking variety Veyron’s 987bhp and 922lb ft. Or roughly one Golf GTI more…

Extra power’s been teased out of the 16-cylinder engine by enlarging the four - FOUR - turbochargers and intercoolers. The chassis’s also been beefed up to support the extra muscle.

Gallery: the new Bugatti Veyron Grand Sport Vitesse at the Geneva motor show

Bugatti President Wolfgang Dürheimer says: “The rapid success of the Super Sport convinced us to increase the performance of the Bugatti roadster… Our engineers worked hard to demonstrate that Bugatti is able to constantly redefine the boundaries of what is technically feasible.”

No performance stats have been released yet, but if it’s anything like the Veyron Super Sport, it’ll hover around 2.5 seconds to 62mph. That’s 0.2 seconds faster than the current Grand Sport. Pricing’s equally mysterious, but we reckon it’ll be in the region of £2.1m.

We’ll have more details when after it’s been revealed at the 2012 Geneva motor show next month.

What would you be willing to do to own one, TopGear.commers?