CASTELBUONO, SICILY — Warning! Do not read on if: 1) Your right foot is heavier than your left foot, and 2) Your driver's license is one ticket away from being revoked. Okay, you made it this far, which means you are probably at least sane enough to consider the following: Forget the 660-bhp Ferrari Enzo, the 605-bhp Porsche Carrera GT, the 617-bhp Mercedes-Benz SLR McLaren, or even the mighty 627-bhp McLaren F1. These supercars are simply slugs compared with the new 2006 Bugatti Veyron 16.4 (16.4 for 16 cylinders, 4 turbochargers). This $1.2 million "hyper-exotic" boasts 987 bhp (1001 metric...