2008 Audi S4 Cabriolet Convertible 2-door 4.2l on 2040-cars

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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.

Electric turbos promise big performance and efficiency gains in the near future

An electric turbo system boosts efficiency between 15 and 20 percent, according to Audi.
Turbochargers, like acoustic guitars, use moving air to create magic. And electric turbochargers, like electric guitars, provide the ability to amp up that magic to amazing new levels.

Forza 5 documents bringing Audi R18 E-Tron and Le Mans to game

Forza Motorsport 5 is set to come out on November 22 alongside the all-new Xbox One. As part of the launch lineup for a big new system, it shouldn't be a shock that Turn 10 Studios, the maker of the Forza series is going all out in promoting its new game. That's meant making interesting partnerships, like the one it enjoys with Top Gear.
Perhaps a less talked about alliance is between Audi and Turn 10. It's put on full display here, though, as Turn 10 documents the process of building Forza Motorsport 5 alongside Audi's quest at Le Mans, with both sides talking about what it takes to make a game and racing team work (they aren't as different as you might think).
There's also quite a bit of Le Mans and Audi-specific content coming with FM5. As with previous iterations of Forza Motorsport, gamers will have access to both the old and new Circuit de la Sarthe (the most notable difference between the two being the presence of Chicanes on the Mulsanne Straight). Audi will also be volunteering several of its vehicles for the new title, ranging from racers like the R18 e-tron Quattro and Audi Sport R8 to production rockets like the 2013 R8 V10 plus, 2006 RS4 and the 1983 Sport Quattro.