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ZF boss thinks 9 speeds is enough for transmissions

The nine-speed transmission might be where the race to add gears ends, ZF Friedrichshafen CEO Stefan Sommer said. He referred to nine speeds as the "natural limit" because going beyond that number adds weight and complexity that cannot be offset by gains in fuel efficiency. "There is no hard line, but you have to consider the law of diminishing returns.

Mercedes E Class gets AMG Pack

Mercedes quietly unveiled the 2009 Mercedes Benz E Class at Detroit. Quietly, because it wasn’t actually planned, but due to details leaking out ahead of the show, it seems Mercedes decided they may as well get the reveal over. Bigger than the last generation E Class, the new E Class gets a complete styling overhaul, with a new style in keeping with Mercedes more recent ‘Family’ looks.

One Lap of the Web: 1980s collectibles, McLaren F1 video and snow tires for all

-- It may not be the newest supercar, but few would argue the McLaren F1's place near the top of the all-time greats list. Now you can relive the car's 241-mph top speed run from 1998 in this full-length video. -- Hagerty's Jonathan Stein considers now-classic cars and the joys of using them as they were intended: In the white stuff with a set of snow tires.