2008 Audi Tt Quattro Base Convertible 2-door 3.2l on 2040-cars

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Watch Stanford's self-driving Audi hit the track

Sending a self-driving race car around a track with nobody inside seems pointless – there's no driver to enjoy the ride, and the car certainly isn't getting a thrill out of it. But the students performing research with Stanford University's Audi TTS test rig "Shelley" (not to be confused with Audi's own self-driving race cars) are getting a kick out of the numbers generated by the machine. "A race car driver can use all of a car's functionality to drive fast," says Stanford Professor Chris Gerdes. "We want to access that same functionality to make driving safer." The teams push the car to speeds over 120mph and the computers have executed lap times nearly as fast as professional drivers. However, they also spend a lot of time maneuvering at 50 to 75 mph, the speeds where accidents are most likely to happen. That way, the students can figure out how to incorporate braking, throttle and maneuvering to develop new types of automatic collision avoidance algorithms. Better technology, for instance, could have saved Google from a recent slow-speed accident where its vehicle was struck by a bus. During race days, students break into teams to perform different types of research. "Once you get to the track, things can go differently than you expect. So it's an excellent lesson of advanced planning," says Gerdes. In the latest rounds of testing, for instance, one PhD student developed emergency lane-change algorithms, while another recorded a skilled human driver in an attempt to convert his behavior into a driving algorithm. The main goal, of course, is to prepare students for something they may not have expected -- an automotive industry that is adopting self-driving technology at breakneck speeds. This article by Steve Dent originally ran on Engadget, the definitive guide to this connected life. Green Audi Technology Coupe Autonomous Vehicles Racing Vehicles Performance Videos racecar research

2016 Audi S6 and S7 First Drive

Audi paired the S6 and S7 for the purposes of this test in Southern California, but these are rather disparate cars. A three-box sedan, even a sporty one like this S6, is for a specific kind of customer. A sleek, four-door hatchback like the S7, on the other hand, is for a different kind of person. These two people might not be as different as Dr. Jekyll and Mr. Hyde, but at the very least the S7 is the S6's lothario neighbor – the one who's always got a glass of scotch in one hand and a chambermaid in the other. A day spent in the canyons around Los Angeles proves there's a big difference between these cars. First, though, let's discuss their similarities. The S6 and the S7 get the same design overhaul we detailed in our piece on the 2016 Audi A6, namely the edge work done on the grille, bumpers, headlights, and taillights. Additionally, they get Audi's new MMI system – the brand's next step in infotainment. A day spent in the canyons proves there's a big difference between these cars. Changes exclusive to these S models include flat-bottomed steering wheels with model badges at the base of the center spoke, and aluminum-finish shift paddles. The pedals and footrest get the aluminum look as well. There's also a new shift lever, and a revised design for the Quattro badge. New seat and surface treatments join the options list, such as Beaufort Walnut inlays and Valcona leather seats in Cedar Brown. The S7 has a new Arras Red interior option as part of its design selection palette, but the striking addition there is the carbon fiber inlay it comes with, which is interwoven with a red thread. You lean in really, really close and see that scarlet yarn, and the cockpit immediately feels more special. It's the kind of beautiful subtlety you expect from Audi, and the result is a scrumptious cabin. The twin-turbo, 4.0-liter V8 gets 30 more horses, topping out at 450 horsepower. Torque remains the same at 406-pound-feet, but fuel economy increases ever so slightly to 18 miles per gallon in the city, 27 mpg highway, and 21 mpg combined. The S6 makes a meal of curves, but it does give away a hint of the effort. It seems that a fair number of buyers wanted S vehicles without the whole suite of go-fast bits; they liked having the "S" on their chests, they didn't need all of the superpowers. Thus, Audi took the Quattro sport differential and dynamic steering off the standard menu, and bundled it with the sport exhaust to create the now-optional Sport Package.

Weekly Recap: The divergent paths of Tesla and Fisker

There's no doubt that Tesla is downshifting while Fisker has been grinding its gears. But it wasn't always that way.
In the wake of Tesla's recent success, it's easy to forget that there were once two California electric carmakers with bright futures.