2008 Porsche Cayenne Base Sport Utility 4-door 3.6l 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.

A few pre-race notes and a lot of photos from the 24 Hours of Le Mans

The 82nd running of the 24 Hours of Le Mans is on.
Audi has won 12 of the last 15 events, the scion of Auto Union is trying to make it 13 this year. To do so, it will have to overcome a situation faced only three other times during its dominance of La Sarthe: underdog status. Toyota has won the first two races of the year and claimed pole for this race, the rumor being that this year it's Toyota's race to lose.
And then there's Porsche. It's been 16 years since the Stuttgart brand raced on the top rung at Le Mans, three years years since it announced its return, just a year since it acquired Mark Webber in a signing that wasn't subtle and a few months since we got eyes on the 919 Hybrid.

Weekly Recap: Ferrari, Ford and Porsche power up for Geneva

Monday was Groundhog Day. Tuesday, apparently, was Sports Car Day. The Ferrari 488 GTB, the Ford Focus RS and the Porsche Cayman GT4 all debuted within hours of each other ahead of their rollouts at the Geneva Motor Show. Three sporty machines, three vastly different approaches – and a lot of implications for enthusiasts. That's a day worth repeating. It also illustrates the opportunities automakers see in the performance market, which is expected to grow in the coming years. Ford estimates the segment has expanded 14 percent in Europe and surged 70 percent in North America since 2009. The Detroit Auto Show was evidence of this, and performance cars of every stripe debuted, including the Acura NSX, Ford GT, Alfa Romeo 4C Spider and several others. This isn't a fad. Performance cars aren't going away. The question is why? Stricter CAFE standards are looming in the United States, as are tighter emissions regulations in Europe. And no one expects gas prices to remain low in America. None of this matters for sports cars, and automakers are increasingly using them to elevate their images. That's why Dodge rolled out two 707-horsepower Hellcats last year. It's why Ford has decided to resurrect the GT for road and track. It's why in the depths of bankruptcy, General Motors continued work on the Chevrolet Corvette Stingray, not to mention the Z06. "Great brands are made one car at a time," Ford of Europe president Jim Farley said at the reveal of the Focus RS. Still, companies make those cars for different reasons. View 5 Photos Mainstream brands like Ford and Dodge want to build cars that get people talking, excite their bases and drive more potential customers into the showroom. They probably don't buy a Focus RS or a Hellcat, but suddenly the regular Focus hatch looks a bit hotter, and that V6 Charger seems to be just a touch more muscular. The halo of performance is alive and well in the eyes of automakers and their customers. "It's one of the most effective catalysts for ingenuity and innovation," said Joe Bakaj, vice president of product development for Ford of Europe. That also leads to a trickle-down effect. Some of the technologies inevitably make their way to other products. It's hard to think the new all-wheel-drive system in the Focus RS that distributes torque front to rear and side to side won't be used in other vehicles. It's different for Ferrari and Porsche.