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Mazda's rotary engine stalled, not forgotten

Development of the next-generation rotary engine from Mazda Motor Corp., first unveiled three years ago, is making slow progress despite missing emissions targets. A top Mazda powertrain executive said today that the 1.6-liter rotary engine, called the 16X, is about 30 percent more fuel-efficient than the current rotary engine used in the RX-8 sporty car. In fact, the 16X so far performs slightly better than Mazda's standard two-liter gasoline engine, said Mitsuo Hitomi, general manager of the Japanese carmaker's powertrain division.

Future products: Kia seeks lively, upscale look

Kia's redesigned Optima sedan and the Cadenza replacement for the Amanti, both due next year, reflect an emphasis on creating a livelier and more upscale look for the once-bland brand. Indeed, styling has been a crucial element of Kia's new-product push in the past 18 months. The team at Kia Design Center America near Los Angeles--part of the automaker's global design network led by onetime Audi design chief Peter Schreyer--has helped set the new styling direction.

Hybrid Porsche 911, Cayenne Coupe, turbo four and more coming soon

Fiat Chrysler Automobiles outlined its plans for the next five years on Tuesday. Not to be outdone, Porsche revealed some interesting tidbits about the next three years on Thursday. To start: Porsche will produce several 700-hp hybrid versions of its Panamera sedan and stalwart 911.