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2015 Porsche Cayenne S

Oh, Porsche.
Just as the dust settles over the 911 GT3's no manual gearbox kerfuffle, the Germans have gone and yanked the yummy naturally aspirated 4.8-liter V8 from the Cayenne S and replaced it with a twin-turbo 3.6-liter V6. Is nothing sacred in Porscheland?
Perhaps not... but that's not necessarily a bad thing. After all, Porsche famously once said they'd never build a diesel, but when they did, it was actually rather stellar.

2014 Porsche 911 Targa

I've watched the electro-hydraulic roof panel open and close about 73 times in the past hour, but its fascinatingly complicated operation still has me mesmerized. I've concluded that only a German automaker - Porsche, to be more specific - would go through the trouble of engineering a roof system that essentially lifts the entire greenhouse off a vehicle, rearranges its components like a sliding-tile puzzle, and then reassembles all of them seamlessly (sans roof panel) to accurately recreate one of its most famed bodystyles.
The 2014 Porsche 911 Targa is a near-perfect modern interpretation of the automaker's 1965 911 Targa, a semi-convertible bodystyle that represents nearly 13 percent of all 911 models sold since production started 50 years ago. While the early car's roof was purely manual in operation - that's the period-correct way of saying that the driver did all of the muscle work - today's Targa is a completely automated transformation that requires only that the driver hold down a cabin-mounted switch for a mere 19 seconds to let the captivating show run its course.
After studying the Targa's elaborate roof operation at its launch at the Detroit Auto Show earlier this year, I was sufficiently intrigued. To that end, I traveled one-third of the way around the planet to southern Italy, hoping that the Mediterranean climate would reveal a bit more about the reintroduction of the automaker's iconic sports car.

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.