2012 Porsche Cayenne S on 2040-cars

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Jay Leno puts carbon fiber wheels to the test on a Porsche 911 GT3 RS

Jay Leno's Garage usually focuses on looking at cars new and old, speaking to their owners and then Jay taking a drive to see what he thinks. However, Leno throws his usual shtick to the curb this week to do a full product test of the carbon fiber wheels from a company called Carbon Revolution. If you're not interested in hearing about wheels for 18 minutes, don't worry. They get mounted on a Porsche and are tested back-to-back with stock wheels, and Leno takes the 911 for a track test, too.
While carbon-fiber wheels aren't exactly a new idea, Carbon Revolution's goal is to create a lightweight, one-piece product that can be mass produced. The company even claims that it already has a deal with an OEM automaker to offer them on a vehicle in a few years. The key to the technology is that it doesn't need an expensive autoclave to be made.
In the meantime, the company's carbon fiber wheels are available as an aftermarket option for about $15,000 a set, according to the video. They weigh in at about 15.5 pounds each and offer OEM-levels of stiffness, so they could cut some unsprung mass off of a performance car. Watch here as Jay and his mechanic Bernard lap Willow Springs and give their feedback about what they think of this cutting-edge technology.

Watch the Chevy Corvette dismiss its Euro rivals at the hands of a Brit magazine

European auto writers, especially the British, have a bit of a reputation for favoring their own domestic cars over foreign rivals in comparison tests. Just think about how many times you've heard Jeremy Clarkson deify the latest product of UK loins while denigrating an American rival as a hopeless "Yank Tank." However, we have to tip our hats to the folks at Autocar because in its latest video comparing the 2014 Corvette Stingray to the Porsche 911, Jaguar F-Type V8 S and Audi R8, it's actually given the Vette a fair shake.
Autocar has put the Stingray through a battery of tests against what it considers to be the three best sports cars on sale in Europe today. And while the tests that it has chosen are somewhat random and subjective, it has concluded that the C7 can stand up against its rivals, even irrespective of its price. It's one thing to hear about how great the Stingray is from American writers, but it's great to know that not all Brits think we've gone crazy for calling the new Chevrolet "exquisite."
Scroll down to see how it all plays out on video.

Porsche Cayenne shows a bit more face, plug-in spotted

Porsche was first rumored to be working on a plug-in hybrid (PHEV) version of the Cayenne over a year ago. However, we had never seen it, until now. The new model was caught almost completely undisguised while testing. In another stroke of luck, we got a glimpse of the upcoming facelift for Porsche's SUV (pictured above) as well.
According to the spy shooter, it was windy during the cars' cold weather testing. The cover blew off of the facelifted Cayenne, and there was enough time to snap these pictures before it could be hidden again. The changes are all quite minor but jive with what we saw the last time it was spied. The rear still wears some cladding but is expected to be hiding lights similar to the Macan.
The second gallery shows off the upcoming Cayenne PHEV. It looks nearly identical to the standard model, except for the extra panel on the driver's side of the car that hides the electric port. One image even shows the car plugged in. The new version is expected to use the same supercharged 3.0-liter V6 and 9.4-kilowatt-hour lithium-ion battery pack with a combined 416 horsepower and 435 pound-feet of torque from the Panamera S E-Hybrid. We enjoyed the system when we tested it last year. It's rumored to debut on the SUV sometime this year.