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GM to drop plans for range-topping Cadillac sedan

General Motors has decided to deep-freeze a range-topping ultraluxury sedan it was developing for Cadillac, according to three people with knowledge of the company’s plans. GM executives recently concluded that the rear-wheel-drive car, which would have been a low-volume showstopper priced well north of $100,000, didn’t offer enough brand-building pizzazz to justify the investment, the sources said. Designers recently were taken off the program and reassigned.

Bugatti Veyron 16.4 Super Sport hits 268 mph

Bugatti is claiming a new production-car top-speed record with a combined two-run average of 267.9 mph (431.072 kph) with a new Veyron 16.4 Super Sport model, smashing the 253.76-mph record set by a standard Veyron 16.4 in 2005. It also betters the existing world-record mark of 256.23 mph (412.28 kph) established by Shelby SuperCars with its Ultimate Aero on a 12-mile stretch of road in Nevada in 2007. Confirming details of the attempt run under tight security at parent company Volkswagen's 13-mile Ehra-Lessien test track in late June, Bugatti says the new Super Sport set the record in the hands of its test driver, Pierre-Henri Raphanel, and under the auspices of officials from the Guinness Book of Records.

CAR interviews AMG's ex-boss Volker Mornhinweg

Volker Mornhinweg has single-handedly transformed AMG, turning the in-house tuner into a fully fledged and independent supercar manufacturer. During his five-year watch he built up an outstanding team of engineers and designers, and his enthusiasm for fast and dynamic cars was as contagious as it was never-ending. In April he will leave AMG and take on the new role of overseeing Mercedes’ van operations – a vital, but very different role.