Bugatti released today the first promotional clip for the Veyron Grand Sport Vitesse. The Vitesse is the convertible version of the high-performance Veyron Grand Sport. Imagine that! Even the most powerful production car in the world has to have a hard-core version. The Veyron Grand Sport Vitesse is powered by the same W16 engine as the regular Veyron, but instead of 1,000 hp, it has an output of 1,200 hp. The top speed of the Grand Sport Vitesse is rated at 431,072 km/h.