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BMW tuner Manhart creates 743-hp M6 Coupe

There are BMW M6 drivers out there for whom the stock output of 560-hp and 500 lb-ft of torque just aren't enough. At least that's what German tuner Manhart is betting on in unveiling their MH6 700 version of the M6 hardtop. Manhart has been tuning BMWs and only BMWs for 20 years, and they've worked on everything from the E30 3-series to the latest offerings from the Bavarian automaker.

Cadillac to update logo?

Cadillac is working on the first major change to its logo in more than a decade, pruning away the classic laurel wreaths that surround its crest, several sources told Automotive News. The modified emblem is likely to appear on a concept vehicle that Cadillac plans to show next month at the Pebble Beach Concours d'Elegance in California. The redesigned badge would appear on production cars no earlier than the 2015 model year, and the plans could change, the sources said.

Watch the Audi Sport Quattro tear up the back roads

Audi revealed its 700-hp Sport Quattro concept at the Frankfurt motor show in September; the car pays homage to the classic rallying Sport Quattro from the 1980s. On Monday, the automaker uploaded a video of the upcoming vehicle to celebrate 100,000 Facebook likes on its German social-networking page. The video shows the Quattro whipping and gripping through a forest/mountain stage.