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Jaguar F-Type squares off against Porsche 911, Aston V8 Vantage with Chris Harris

Chris Harris is back on the job, taking on really really difficult car questions like: Which enormously sexy and good-to-drive, high-performance convertible is the top of the heap? As one of the hottest cars in the luxury space right now, the Jaguar F-Type S is, of course, in on the action. Competition comes in the form of the Aston Martin V8 Vantage Roadster and the Porsche 911 Carrera S Cabriolet. Sun-loving CEOs who despise test-driving need look no further.
Scroll on below for a fully featured (with a running time of more than 20 minutes) comparison video. Harris does his best to entertain - in a typically nitpicky and made-up-British-words fashion - and the moving pictures are lovely to look at. Kick back, pour a pint and get your weekend started off right.

Porsche releases new images of LMP1 racecar

Porsche has released another batch of images of its LMP1 competitor preparing for its debut season in 2014. This isn't the first we've seen of the new car, as June saw four images of the new racer undergoing testing. Where those images looked merely like someone taking pics during the test, the 11 new images seen above have all the hallmarks of highly polished PR shots.
That aside, the camo-covered cars still provide another look at what the new LMP1 car will look like when it arrives next season. The taillights follow the example set by Audi, by vertically mounting ultra-thin LEDs on the tips of the rear wing, while the LED headlights sport the four-prong look that Porsche has been pushing of late. Besides those two items, its difficult to make out many details due to the amount of camo.
Porsche's LMP1 effort will be focused on the FIA World Endurance Championship, which will see the revered brand return to the top flights of the 24 Hours Of Le Mans with F1 ace Mark Webber behind the wheel. As we've mentioned before, the German brand has set up a dedicated microsite that will cover its newest racer's progress.

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.