Bugatti Veyron Sports Exhaust - Revs and Driving

Facebook: Twitter Shmee150 films a Bugatti Veyron with a not-so-standard exhaust, normally the Veyron is an incredibly quiet machine but listen to the W16 rumbles with some revs and as it cruises through London, departing from the launch event for Forza 4 on Xbox 360. I await information from you all as to the exhaust nature of the exhaust - I'

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