Upper Air Cleaner Housing 05 06 07 Envoy 4.2l P/n: 15175750 R258444 on 2040-parts.com

Sky takes Mazda powertrains to the next level

Mazda's next-generation of powertrains, called Sky, will feature a variety of new technologies that company engineers say improve fuel efficiency by 20 percent. The Sky engines--Sky-G for the gasoline version, Sky-D for diesel--coupled with a Sky-Drive automatic transmission or a six-speed manual, were offered for test drives during a technology day in Berlin. The Sky-G engine we drove was a 2.0-liter inline-four that made 160 hp and 155 lb-ft of torque.

Spied: Cadillac XTS spotted testing

The Cadillac XTS is nothing new. We had our first look at the concept in 2009. Since then, we've seen it on auto show floors from Detroit to Beijing.

One Lap of the Web: Lamborghini Gallardo replacement, Audi scrutineering and a morning dose of classic sheetmetal

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. Details regarding the Korres Project 4 have surfaced today.