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Audi RS7 prototype is world's sportiest self-driving car [w/video]

Audi may not be the only automaker out there toying with self-driving automobile technology, but it is arguably the fastest of them. A few years back, it raced unleashed a driverless TTS on the Bonneville Salt Flats, then sent it up Pikes Peak and around Thunderhill. But now it's taking things a step further with the vehicle you see here.
This RS7 Sportback has been fitted with steering, brakes, throttle and transmission hooked up to a computer system that combines GPS, high-frequency radio signals and 3D imaging camera to drive the vehicle autonomously not just in slow-paced, stop-and-go traffic, but around the track at the same pace a professional racing driver would push it: full throttle on the straights, full braking before the corner and 1.1-g of cornering force.
As promised, Audi plans to unleash the self-driving RS7 - which it calls "the sportiest piloted driving car in the world" - at Hockenheim next weekend prior to the DTM season finale, where it is anticipated to pull a 2:10 lap time. The next stage will be to set it lose on the Nürburgring Nordschleife, all 154 turns and 13 miles of it, which ought to pose a heck of a challenge to the engineers from Ingolstadt. In the meantime you can scope it out in the high-res image gallery above and the second teaser video below.

Audi tests new kind of car sharing, lets you buy cars with buddies [w/video]

Car sharing services like ZipCar, Car2Go and others offer people in cities the chance to have a vehicle without dealing with the hassles of parking or maintenance, while also eliminating traffic. However, many individuals are turned off by the idea of splitting a car with an entire metropolis or would prefer to have a specific model at their disposal. For these unsatisfied souls, Audi has a new arrangement in Stockholm, Sweden, called Audi Unite that might be just the ticket. The setup is basically a small-scale car sharing service. Up to five people agree to share any of Audi's models for a year or two – even an R8 if they are so inclined. Each user has a special Bluetooth key fob that identifies them to the vehicle, and a smartphone app allows operators to schedule time with the car. Each person is then billed monthly according to his or her use. Audi thinks it might work best with friends, colleagues or neighbors, but the company can also play matchmaker for clients, if necessary. "In the beginning, our biggest fear was what if two people want to go somewhere at the same time-what happens then?" said Clemens Weisshaar, one of the founders of design firm Kram/Weisshaar that helped develop the idea, to Fast Company. "Interestingly, it never happened." They chose Stockholm because the city was tech-savvy, and there is a tradition of sharing there. Prices for Audi Unite seem fairly reasonable for each user. According to the service's website, if four people use an A3 Sportback for two years with a 20,000-kilometer (12,247-mile) driving limit, they would pay an average of 2,091 Swedish krona ($277) each per month. For an extra 365 krona (about $50) per person each month, they can add a package that includes vehicle pickup and delivery for monthly interior and exterior cleaning, winter tire exchanges and necessary servicing. After Stockholm, Audi plans to try Unite in other Swedish cities before launching the program in additional countries, according to Fast Company. Scroll down to watch a video with more explanation about how the program works and read the automaker's press release about the initiative.

Audi builds 5-millionth vehicle with Quattro

Quattro, the trademark name Audi has put on its all-wheel-drive system engineered for passenger vehicles, recently celebrated its five-millionth installation. The driveline has been offered in more than 140 different vehicles since its introduction more than three decades ago.
The all-wheel-drive technology made its world debut at the 1980 International Geneva Motor Show, beneath the floorpan of the Quattro Coupé, a low-volume two-door. It didn't take consumers long to embrace Audi's innovative approach. While most four-wheel-drive systems at that time utilized heavy transfer cases or second cardan shafts, Quattro was virtually tension-free, light, compact and efficient. Most importantly, enthusiasts found it was especially suitable for sports cars.
Today, the automaker offers Quattro on its full line of passenger vehicles and it is unquestionably successful (the technology enjoyed a 43 percent take rate in 2012). On models with transverse-mounted engines (A3 and TT), Audi uses an electronically controlled multi-plate clutch with hydraulic actuator. Under normal conditions, the clutch sends power almost exclusively to the front wheels (if wheel slippage occurs, up to 100 percent of the torque may be sent to the rear). Vehicles with transverse-mounted engines (A4, A5, Q5, etc...) use a self-locking center differential sending 40 percent of the engine torque to the front axle and 60 percent to the rear under normal conditions (it is able to send the majority of the power to the axle with better traction when needed). The highest-performing Quattro systems use torque vectoring to further improve cornering grip and speeds.