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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.

2014 Audi RS7 is a 189-mph terror

If you have a burning desire to take yourself and four friends to 189 miles per hour, the 2014 Audi RS7 Sportback can help you out. The luxury hatchback bowed at the 2013 Detroit Auto Show today, complete with a 560-horsepower twin-turbocharged 4.0-liter V8 engine thrashing under the hood. Getting to 62 mph takes a shave under 3.9 seconds thanks in part to the 553 pound-feet of torque on hand from just 1,750 rpm. While the base car comes with an electronically limited top speed of 155 mph, customers can request the governor be removed by purchasing the dynamic package plus, upping the V-max to 189 mph.
Ludicrous? Sure, but Audi says the RS7 can also yield up to 25 mpg on the US scale. With a cylinder-on-demand system, the V8 can deactivate up to four cylinders by closing their valves. Once the driver gets frisky with the throttle, the engine automatically kicks from four-cylinder to eight-cylinder mode in a few hundredths of a second. The engine is bolted to an eight-speed automatic transmission, which pushes power to all four wheels. You can read the full press release below for more information, but we think you'll have a better time viewing our live shots from the show floor..

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.