It's not on the market yet, but it will be on the Hockenheimring next weekend. It's the Mercedes-Benz C 63 AMG, which apparently will be the pace car for the German Touring Car Championships (DTM) finals. Spies recently caught this light-bar'd specimen near the Nürburgring. It had been fitted with straight pipes and thus was "painfully loud" to at least one observer. Note also the altered front bumper assembly with large air intakes and carbon fiber strips on the bottom splitter, all over gunmetal gray multispoke wheels and beefier brakes. Lets hope they don't let it anywhere near the Audis. [World Car Fans]