the Bugatti Veyron 16.4 Grand Sport. A removable roof adds open top motoring potential to the Veyron's list of capabilities. A lightweight transparent removable polycarbonate roof panel is fitted, necessitating a raft of changes to the monocoque of the Veyron to attain the requisite chassis stiffness, as the original fixed roof of the closed Veyron had provided some of its structural rigidity. There is no place to store the roof panel in the car when it is not in place, so Bugatti have supplied a folding canvas cover in the event that weather protection is needed once a journey is under way. Keeping the weight as low as possible was also a primary objective, and the roadster incurs just an 80 kg penalty. Other changes include redesigned front lights with daytime running LEDs, and a higher windscreen. Interior fittings have also been tweaked, with a new sound system being a prominent feature.
Power is unchanged from the "normal" Veyron, the mid-mounted 8 litre W16 engine pumping out 1001 PS (736 kW) at 6000 rpm and 1250 Nm (922 ftlb) of torque between 2200 and 5500 rpm, thanks largely to 4 turbochargers assisting the breathing. The gearbox too is unchanged, a seven speed sequential gearbox with a fully automatic mode channeling that power to all four wheels. With the roof closed, Bugatti claim a top speed of 407 km/h for the Grand Sport, identical to its fixed top brother. the 0-100 km/h sprint is claimed to take under 2.7 seconds. When the folding canvas top is in place, top speed is limited to 130 km/h.
