The world's automakers continue to provide a glimpse of what to expect at the 2012 Geneva Motor Show in March. The latest teaser comes from Bugatti, which will unveil its Veyron 16.4 Grand Sport Vitesse, calling it the world's most powerful roadster - time to invest in some super-strength adhesive for that toupee.

The Veyron 16.4 Grand Sport Vitesse is essentially an open-top version of the Bugatti Veyron Super Sport, which currently holds the world speed record for a production car at 268.8 mph (431 km/h).

For the new roadster, Bugatti's engineers have upped the power of the current open-top Grand Sport, which boasts 1,001-horsepower and torque of 1,250 Nm, to 1,200-horsepower and a maximum torque of 1,500 Nm for the Vitesse. The power increase of the vehicle's 16-cylinder engine comes courtesy of four enlarged turbochargers and intercoolers, with the chassis modified to support the power increase.

Bugatti hasn't revealed pricing for the new car, but don't go expecting much change from US$2 million.