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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.

EVO takes flight in BMW's sultry i8

Electric cars and hybrids are here to stay, much to the apparent dismay of some auto enthusiasts, but that doesn't mean they have to represent the death of enjoyable driving. Granted, the initial run of hybrids in the US like the Honda Insight and Toyota Prius weren't exactly tailor-made for aggressive folks behind the wheel, but things are clearly changing. In its latest video, Evo takes a look at three examples from Europe's new crop of electrified vehicles to show that the future of fun motoring is safe and sound.
Evo editor Henry Catchpole kicks things off with one of the most bizarre EVs of the bunch, the tiny Renault Twizy. Its low power and 50-mile-per-hour top speed might make it miles away from a hot hatch, but there's still fun to be had in extracting the most from this little city car. Next up is the Audi A3 E-Tron, which isn't technically available yet. It's a step in the right direction of eventually creating an affordable, fun-to-drive hybrid hot hatch.
However, the main event is Catchpole getting some seat time in the BMW i8. The Bimmer can really fly -literally in this case - and the butterfly-door coupe offers a clear look at the prospects for electrified sports cars. It might not have the power of hybrid supercar contemporaries like the LaFerrari or Porsche 918 Spyder, but the BMW doesn't cost nearly as much, either. See? Improved efficiency doesn't have to mean boring.

Audi S1 rally car races its RC counterpart

Veteran racer Mattias Ekstrom campaigns the meanest looking Audi S1 on the block in the FIA World Rallycross Championship. With a 2.0-liter turbocharged four-cylinder pumping out a claimed 600 horsepower and all-wheel drive, this little hatch can reportedly hit 60 miles per hour in a wickedly quick 1.9 seconds. While those specs are mighty impressive, they don't really matter too much for Ekstrom's latest race in the S1 against a pint-sized doppelganger in the form of an RC replica of the rallycross machine around a warehouse. Despite, the massive gulf in size and power, the two Audis appear fairly evenly matched. The RC version can't quite match the real one in outright speed but can go under obstacles that Ekstrom's S1 is forced to drive around. Check out the clip above to see which S1 makes it to the finish first. Related Gallery EKS Audi S1 Supercar News Source: Audi Deutschland via YouTubeImage Credit: Related images copyright EKS Motorsports Toys/Games Audi Hatchback Racing Vehicles Videos rc car audi s1