You can see it in Top Gear. it went Up to 267 MPH=425 km/h. Really Fast. Fastest Legal Production Car In The World. For Now ;)
A Bugatti Veyron's top speed is 253mph (407kph)
The Bugati Veyron goes 243mp/h.
A Bugatti Supersport can go 268mph.
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The Bugatti Veyron
It goes 268 mph.
Car and Driver magazine clocked the Bugatti Veyron at 253 MPH.
The fastest speed of the Bugatti Veyron Supersport World Record Edition is 599 km/h.
253 mph
2.5 seconds
According to Top Gear (when James May drove it), A Bugatti Veyron Super Sport goes 267mph... (I love Bugatti Veyrons!)
Limited to 258mph, will go 267mph unlimited.