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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.

TT Offroad Concept shows Audi's design icon isn't afraid to play dirty

We'll step right out and say we like the TT Offroad Concept, but there's something that's just a bit too... familiar about it. Yes, this yellow five-door looks like a not-so-distant relative of the Allroad Shooting Brake Concept that debuted at the 2014 Detroit Auto Show earlier this year. So, we've seen the production TT, a super-light, high-performance model and now we're seeing a crossover. Does any of this sound familiar? Considering the Detroit concept earned an editors' choice award for that show, you can imagine how we feel about the strikingly similar TT Offroad, which is debuting at the Beijing Motor Show.
The two concepts share a propulsion system - a high-performance version of Audi's E-Tron plug-in-hybrid drivetrain. Total system output sits at 408 horsepower, thanks to a 2.0-liter, turbocharged four-cylinder and a 40-kilowatt electric motor in front and an 85-kW motor on the rear axle, for all-wheel drive. 62 miles per hour arrives in 5.2 seconds, while the TT Offroad is limited to 155 mph. Fuel economy is impressive, with a claimed 123.8 US miles per gallon on the European cycle.
The most obvious different between these two, then, are their looks. The TT looks a bit tougher, thanks to its larger 21-inch wheels and narrower headlights, but its more conventional belt and roofline give it more of an Audi Q3's look. Out back, a slightly restyled bumper is the sole differentiator between the two vehicles.

Researchers halfway to cutting carbon fiber costs by 90%

Carbon fiber has been utilized for decades to build racecars, as a means to cut weight while maintaining strength. But until recently, the space-age material has been largely absent from the street on anything but supercars because of the expense to use it. Recently, BMW signaled a major shift in that trend when it starting using carbon fiber reinforced plastic panels on the i3 and i8. This relatively small scale start might be just the beginning; the German company believes that a breakthrough to inexpensively manufacture the lightweight stuff is just on the horizon.
MAI Carbon Cluster Management GmbH counts BMW, Audi, Airbus, the German government and many other organizations as supporters, and it's researching how to make carbon fiber cheaper to produce, according to Automotive News Europe. The company thinks it can reduce costs by 90 percent in the near future. "We've certainly reached a halfway point on our cost-cutting target for suitable carbon-fiber parts," said project head Klaus Drechsler to Automotive News Europe.
Unfortunately, it isn't entirely clear just what MAI Carbon is doing to make such a huge leap possible. However, a recent post on the company's website talks about a new form a carbon fiber using a thermoplastic matrix that could be cured in less than three minutes. That's compared to about 90 minutes in the traditional process with an autoclave.