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Watch the Audi R18 E-Tron Quattro long-tail testing at Monza

Audi released a single photo of the long-tailed version of its R18 E-Tron Quattro Le Mans racer, but the photo didn't offer the best view of the stretched rear. The car has been caught testing at Monza, in Italy, and not only do we get a better view of what it's got out back, we get pretty awesome sound as it makes high-speed runs past the camera.
Since the 2013-spec car was found to be down on performance versus the 2012, the long-tail is a different evolution to see if Audi can eke out more performance from its already dominant chassis. Have a look and a listen in the video below.

Audi R8, Lamborghini Huracan could get twin-charged five-cylinder

Engine downsizing and forced induction are some of the biggest trends in automotive powertrains today because. They offer the chance to reduce emissions and boost fuel economy, while possibly maintaining power. The shift is already happening to performance cars with turbocharged four-cylinders finding their way into the Ford Mustang, Chevrolet Camaro, and future Porsches. Now, there are rumblings of a tiny chance for a similar change coming for the Lamborghini Huracan and Audi R8. Why the new powertrain? China. While the market there might have slowing growth, it's still a major country for auto sales. The annual taxes on cars there also happen to be based on engine displacement, and there's a 40 percent rate on those over 4.0-liters, according to Car and Driver. The obvious answer to this conundrum is to build a smaller displacement, forced induction engine for the R8 and Huracan. Car and Driver points to the new turbocharged and electrically supercharged, 2.5-liter inline five-cylinder from the recent Audi TT Clubsport Turbo concept as a possible solution. Audi's e-turbo technology runs off a 48-volt electrical system and lithium-ion battery to produce a total of 600 horsepower and 479 pound-feet of torque in the prototype. With this mill, horsepower would barely shrink compared to the R8 V10 Plus and Lambo, but it actually makes more peak torque than their 5.2-liter V10s. While this is all theoretically feasible, take the possibility with a big grain of salt for now. According to Car and Driver, Quattro GmbH's Stephan Reil says that there's no work currently underway to fit the twin-charged five-cylinder, "but it has been talked about." That means such a vehicle is likely years away, if ever. In the meantime, a diesel version of the e-turbo setup is on the way the in the SQ7. Related Video:

Lamborghini could be sold or spun off from the Volkswagen Group

Volkswagen is reportedly considering a sale or stock listing for its high-end Lamborghini brand. The German automaker is looking to fold the Italian supercar brand into a separate legal entity, reports Bloomberg, which cites "people familiar with the matter" who don't want to be identified "because the deliberations are confidential and no decisions have been made." Any of this sound familiar? The goal of spinning off Lamborghini would be to stockpile more cash and other resources for VW's massive planned push into electric vehicles. Back in March, reports circulated that Volkswagen's "Vision 2030" corporate plan might include plans to focus on the brand's core brands — VW, Audi and Porsche. That means the futures of fringe players like Lamborghini, Bentley, Bugatti, motorcycle brand Ducati and design firm Italdesign (and note this isn't a comprehensive list of brand's under the expansive VW Group umbrella) are up in the air. VW, according to the report, is targeting a market value of $220 billion, which is a big jump from the brand's current $89 billion valuation. Bloomberg pegged Lamborghini's valuation at around $11 billion back in August, buoyed by sales and profits generated by the introduction of the Urus sport utility vehicle. On the flip side, Lamborghini is currently grappling with how best to update its supercar lineup in the face of ever-increasing emissions regulations.