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2013 Nissan GT-R and 2013 Alpina B6 mix it up on track and street

Here we have Autocar making an unforeseen comparison: the Nissan GT-R against the Alpina B6 at Brands Hatch and on public roads. Steve Sutcliffe clobbers the circuit in the 3,828-pound, all-wheel-drive sports car, then sees how well the 4,114-pound, rear-wheel drive grand tourer does against it.
Sutcliffe says there are quite a few similarities between the two cars, but that's really only on the spec sheet. The Nissan's got two turbos attached to its 3.8-liter V6, 542 horsepower and 465 pound-feet of torque. The Alpina's got two turbos attached to its 4.4-liter V8, 532 hp and 528 lb-ft. But one's brief is to be a monster on the track, the other on the boulevard, and if there's anything the video demonstrates, it's each car's focus.

Next BMW 6 Series, M6 to take aim at Porsche

Since BMW reintroduced the 6 Series line back in 2003, the big two-door has happily sat as the brand's de facto grand tourer. That will allegedly change come 2017, as Car is reporting that Munich will put its coupe on a diet with the so-called G15 generation, allowing the 6 to go after the likes of Porsche. All three of the current 6's body styles will be carried over for 2017, with the base 640i Coupe trimming over 500 pounds of body fat, to around 3,450 pounds. Even the droptop is getting some lipo, dropping from 4,255 to around 3,750 pounds. It's unclear how much the Gran Coupe will be lightened, as it will be the only member of the 6 Series family that's growing in size. BMW will stretch the wheelbase of its fullsize, four-door coupe, which should make it decidedly more sedan like. The weight savings come thanks to a new modular architecture that promises a "more advanced material mix." That means carbon fiber, high-strength steel and aluminum elements, and even some titanium and magnesium bits. Along with xDrive all-wheel drive, Car is promising new six- and eight-cylinder engines, with the 640i's 3.0-liter, turbocharged gas engine producing 347 horsepower while the diesel mill turns out 333. The 4.4-liter V8 of the 650i will deliver 476 ponies, while the range-topping M6's twin-turbo V8 will reach the magical 600-hp figure. Of course, we can expect to hear more about the next 6 in the coming months and years. In the meantime, though, let us know what you think of Car's positing below, in Comments.

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.