1980 Porsche 928 Base Coupe 2-door 4.5l 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.

Porsche 911 RSR stops just long enough to have its photo taken

When it comes to Porsche and its rapidly escalating endurance racing program, all eyes may be on the new 919 Hybrid - and with good reason: that's the vehicle with which Porsche will be challenging the likes of Audi and Toyota for wins in the top-tier LMP1 class of the FIA World Endurance Championship and at Le Mans. But it's the 911 RSR that does and will continue to form the backbone of the factory's effort.
The 470-horsepower racing version of the road-going 911 took a one-two finish in its class at Le Mans last year, and also won its class at the Daytona 24 this past January as well. This year Porsche will field two of them in the WEC, another two in the United SportsCar Championship here in the US and will sell countless more to customer racing teams that will undoubtedly continue to rack up trophies in racing series around the world. This, then, might be a unique chance to see one standing still. Check it out in our gallery of live images above from the Geneva Motor Show.

Porsche suspends 911 GT3 deliveries amidst fears of spontaneous combustion

Seeing pictures of Italian supercars burst into flames by the side of the road, as our compatriots at Axis of Oversteer point out, has become something of a usual sight. But a Porsche? Surely those meticulous German engineers have got that taken care of, right?
Not necessarily. Reports coming in from Europe indicate that no fewer than five 911 GT3 coupes have "spontaneously combusted" in the past few weeks, prompting Porsche to launch an investigation. In the meantime, they've reportedly ceased deliveries of the new GT3 while they try to determine what the problem is and work to rectify it.
We wouldn't be surprised to see a recall issued once the problem is resolved, but for now, we'd encourage existing owners to be extra vigilant behind the wheel - or better yet, leave their cars in the garage for the time being. You wouldn't want to drive a 475-horsepower rear-drive sports car through a Polar Vortex, anyway, right?