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Audi testing long-tail version of R18 e-tron quattro for Le Mans

Race teams are always looking for ways to shave hundredths of seconds of their lap times. Case in point: Audi is making some slight changes to its prototype racecar to make it ever so much more slippery as it cuts through the air.
Debuting at the second round of the FIA World Endurance Championship at Spa on May 4, Audi will be testing a long-tail version of its R18 E-tron Quattro racecar. As its name suggests, the long-tail car gets a lengthened rear section with the goal of improving aerodynamics. The long-tail will be run alongside the standard version of the racecar as a testbed for possible changes that might be in store, heading into the 24 Hours of Le Mans.
Audi did not say how many inches were added to the racecar, but as you can see in the image above, "long-tail" definitely doesn't take on the same meaning of classic long-tail cars of the past such as the Porsche 917. More information about the car, Audi's team and even some info about the track itself can be found below.

2015 Audi A3 Sportback E-Tron

A little more than a year ago, I drove an Audi A3 E-Tron prototype - an early concept electric vehicle built on the outgoing second-generation A3 platform. While I was impressed with the technology, its 3,800-pound weight, 10-second 0-60 time and 90-mile range will likely put it only mid-pack, at best, among its future competitive set. But Audi promised bigger and better things would come.
I didn't have to wait long. Immediately following the Los Angeles Auto Show, Audi asked me come drive its all-new successor built on the company's third-generation A3 chassis. Compared to last year's model, the new plug-in hybrid electric vehicle (PHEV) boasts a lighter curb weight, quicker acceleration and six times the range. Calling it improved is an understatement. Best of all, it's heading to production.
Technically speaking, the 2015 Audi A3 Sportback E-Tron is a parallel hybrid, meaning its electric motor is sandwiched between a combustion engine and an automatic transmission - either, or both, is capable of powering the front wheels. The gasoline-powered engine is a direct-injected and turbocharged 1.4-liter four-cylinder, rated at 150 horsepower. The transmission is a six-speed dual-clutch gearbox. A 75-kW electric motor sits between the two. Water is used to cool the gasoline engine, the electric motor and the battery pack - there are three independent closed loops.

A magical, disappearing ad for the hydrogen Audi A7 Sportback H-Tron

It's not quite Tupac appearing at Coachella with Snoop Dogg and Dr. Dre in hologram form, but it'll do for the gearhead set. Audi is looking to make a first impression for its A7 Sportback H-Tron hydrogen fuel-cell vehicle by making as little of an impression as possible. Like the car itself, Audi has, as it says in a video, "created ads that leave behind nothing but vaporized water." Pretty slick. Audi worked with German advertising agency Thjnk, on the campaign, which uses LED lighting and other bits of magic to first show an image of the sedan and then show it disappearing into a cloud of steam, according to Adweek. The publication posted Audi's 58-second video on the campaign (we've embedded a German version of the video for those looking to practice a bit of linguistics). The German automaker first revealed details about the A7 Sportback H-Tron late last year. The all-wheel-drive sedan can go as far as 31 miles on electricity alone. And the hydrogen fuel-cell drivetrain delivers almost 400 pound-feet of torque and a full (hydrogen) tank's range of 311 miles as well as a 0-62 mile per hour time of less than eight seconds and a top speed of 112 mph. Featured Gallery Audi A7 Sportback H-Tron Quattro View 83 Photos News Source: Adweek via Hybrid Cars Green Marketing/Advertising Audi Hydrogen Cars billboard adweek