The issue of Autombile Magazine that has the Bugatti Veyron points out that only 266 HP is required to reach 155 MPH. Then it says that when you summon the remaining 721 HP, all hell breaks loose. It's actually got a gauge that shows the HP being generated. Pretty cool car - 1,000 HP and 250 MPH. And the neat part is that it was designed for these speeds. So it's got the brakes and the aerodynamics not to cause problems when you're driving it. The guy said that he'd done 212 MPH on the AutBahn and that the 100 MPH differential completely freaked out he other drivers. LOL. I guess so!