http://www.bugattipage.com/#News

"May 7, 2005

Bugatti Veyron officially the fastest of all!
Bugatti finally has proven their promise: On the Volkswagen test-circuit Ehra-Lessien, under supervision of the TüV Süddeutschland a speed of over 400km/h was attained. When the Bugatti will reach production stage in september, it will be the fastest production car (until now: the Koenigsegg CCR with 387.9 km/h).
The official top speed (I do not have an actual number yet) was noted on several runs, and in both directions. It is stated that it was over 400 km/h, but not how much over. Bugatti always stated a figure of 407 km/h, so we´ll have to see if they reached that."