Even at very low revs, the Bugatti Vision Gran Turismo is incredibly loud, and its quad pipes make a raw sound. The hypercar only idles around an exhibition center in this clip, but the concept ...

The new supercar is an open-top Veyron Grand Sport 'Sang Noir' (French for 'black blood') -- it's essentially an evil-looking unpainted carbon-fiber version of the Bugatti Veyron Grand Sport targa.