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Jaguar XJ vs. Porsche Panamera, an AutoWeek popularity contest

Seen last week in California: the redesigned Jaguar XJ sedan is parked next to the new Porsche Panamera sedan. As far as we can tell, it's the first time that these two new cars have stood side by side, a world exclusive. And we want to know--which one would you put in your garage?

Engineers wring 30 mpg on the highway from the 2011 Ford Mustang V6

First Ford got us excited by making some major engine upgrades to the Mustang for 2011--a 305-hp, 3.7-liter V6 and a 412-hp, 5.0-liter V8. Now it's wooing us with fuel economy, too. Ford says the V6-powered Mustang has been certified by the EPA to deliver 30-31 mpg on the highway (depending on the transmission) and 19 mpg in the city.

AUTO SALES: GM, Ford, Honda, Toyota drag industry to 36% decline

General Motors, Ford Motor Co., American Honda and Toyota Motor Sales U.S.A. all reported sales declines of more than 31 percent in December as the U.S. auto industry capped its worst year since 1992.