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Audi A3 G-Tron offers big range, few emissions

Audi is exploring a variety of sustainable transportation technologies beyond the traditional diesel, hybrid, plug-in and electric options, including the compressed natural gas A3 Sportback G-Tron that debuted today at the Geneva Motor Show.
The most interesting thing about this rather innocuous-looking A3 Sportback is that when run on Audi e-gas, the car becomes completely carbon neutral, emitting no more CO2 than was chemically input in this special fuel's production. Audi has already broken ground on a new plant - powered by renewable energy, of course - that uses electrolysis to produce e-gas, which could then be made available through any natural gas distribution network.

Next-gen Audi A4 spotted

With fresh entries from Lexus and Mercedes-Benz and a newer entry from BMW, Audi is in a rather precarious position with its A4 sedan, which has been on sale in its current form since 2008 (aside from its 2012 mid-cycle refresh). It's high time a new vehicle takes its place.
If Audi follows convention, the vehicle shown above will be known internally as the B9, and will ride atop the so-called MLB Evo, a new version of the modular platform underpinning the current A4 (and a whole heap of other Volkswagen Group products). That new bit of hardware should bless the next-gen A4 with a weight savings of anywhere from 175 to 220 pounds.
In terms of its looks, our spies point to a more evolutionary approach. Expect the A4 to borrow from the design being pioneered by the third-generation Audi TT, particularly around the grille, which should be more upright. The wheelbase should get a stretch while Audi will clip the overhangs of its midsizer, relative to the current sedan.

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.