1977 Porsche 911 on 2040-cars

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Xcar considers the Porsche 911 GT3's PDK

Porsche ruffled some feathers when it unveiled the latest 911 GT3 a couple of years ago with a dual-clutch transmission instead of an old-school manual. The rationale was (and remains) that the PDK makes the enthusiast's Elfen faster than it would be with a stick. The purists scoffed, but Zuffenhausen held firm – and even did the same with the even more hardcore GT3 RS. In its latest video, the boys at Xcar set out to find out if the GT3 with its fancy automated gearbox is as good as the previous model (or as good as the current model could be) with a manual – and took in some of the track toy's other trickery while they were at it. Check out the video above to find out what conclusion they reached.

Watch a Porsche 918 Spyder being built by hand

No music track, no dialogue, no voiceover, just a group of women and men in a very clean room in Zuffenhausen assembling the Porsche 918 Spyder. It's the antidote to the adrenaline that the open-topped hybrid coupe encourages in most enthusiast bloodstreams, but this nearly-11-minute video is the most captivating B-roll we've seen in a while. From hand-sewn leather to hand-wrapped trim, monococques being wheeled about, the copious use of shims and the rear brace being fitted over the engine, plus the Christmas-like joy of opening a box of body panels, it's all in there. You can't buy a new one anymore, but you can see how they're built for those who did buy them in the video above. Related Gallery 2015 Porsche 918 Spyder: First Drive View 51 Photos Related Gallery 2015 Porsche 918 Spyder Factory Tour View 28 Photos News Source: Cars via YouTube, Road & TrackImage Credit: Copyright 2014 Michael Harley / AOL Green Plants/Manufacturing Porsche Convertible Hybrid Luxury Performance Supercars Videos porsche 918 spyder zuffenhausen

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.