I watched them build the Bugatti's on "ultimate factories" the other day, VERY good show in quite a bit of detail of how they are built. They said the puter limits them to 253mph but they will go a bit faster than that. Every car is run to 253mph (by GPS reading) before it's sold, tested on their own 60 mile track with a 5 mi. straight. (they had a camera in the car as they tested it) Also said, as full power it gets 3mpg...
Tires are expected to last 6,000 miles and it cost $16,000.00 to replace them.
I'm still saveing up to buy the "first" one! lol
DM