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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.

Detroit Auto Show: Volvo S60 sedan

Showing a new direction inspired by Scandinavian design, Volvo displayed a concept vehicle at the Detroit Auto Show that previews the new S60 sedan, due in 18 months. The car has a new face--with angled headlamps, a coupe roofline and no B-pillar--and an interior with the "environment of a modern Scandinavian living room," said Steve Mattin, Volvo senior vice president of design. The car's more emotional look is part of a longer-term strategy to give Volvo a more exciting image in the United States through changes in product design and marketing, said Stephen Odell, CEO of Volvo Car Corp.

Forza Motorsport 5 v Gran Turismo 6

Fans of driving simulators are usually torn between two great racing games: Forza (on Xbox) and Gran Turismo (on Playstation). There are new versions of both games due soon – Forza Motorsport 5 and Gran Turismo 6. But which one are we most excited about?