Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Bugatti’s 254mph Veyron Vitesse officially world’s fastest drop-top

The Bugatti Grand Sport Vitesse has been officially confirmed as the world’s fastest open-top production car, having been clocked at 254.04mph. The milestone will be celebrated (naturally) with a limited run of special ‘World Record Edition’ Grand Sport Vitesses (which has been on sale since January 2012), with the commemorative cars sporting orange flashes to the carbonfibre bodywork, and orange wheels. Bugatti Veyron Grand Sport Vitesse: a 250mph wind in your hair Bugatti admits that the initial open-top speed target for the Bugatti Grand Sport was a piffling 233mph.

Revealed: Mercedes-Benz CL63 AMG

Less than a month after revealing a raft of changes to standard versions of its range-topping coupe, Mercedes-Benz has lifted the veil on a more powerful and significantly more economical CL63 AMG. Set for U.S. sale from November, the up-market performance coupe receives a series of mid-life styling tweaks, including larger headlamps, a restyled grille, more heavily contoured hood and re-profiled bumpers--all aimed at providing the CL63 AMG with added appeal against stiff competition from the likes of the Bentley Continental GT and the newly refreshed Aston Martin DB9.

Muscle-car icons immortalized in new postal-stamp set

Perhaps sensing that it's at risk of going the way of the carbureted big-block and leaded gasoline, the United States Postal Service is apparently willing to try anything to boost its bottom line. Though we're sure its recently announced line of postal worker-inspired apparel will be a runaway (and runway) success, we're glad to see the USPS reaching out to the automotive-enthusiast community with a new set of limited-edition stamps that commemorate the American muscle car. We told you about the stamps earlier this year, but we can now confirm the lineup.