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Alpina bringing new B4 Bi-Turbo Cabrio to Geneva

Interested in picking up a new BMW 4 Series with a turbo six? You've got options: you can get the 435i with 300 horsepower or spring for the M4 with 425 hp. But if it's the convertible model you want, we're afraid you'll be limited to the latter as the M division can't help you (at least not for the time being). But that's where Alpina comes in.
The aftermarket tuner closely associated with BMW offers the B4 Bi-Turbo (at least in Europe) with that same 3.0-liter twin-turbo inline-six massaged up to 410 horsepower that starts to pose a threat to the M4. What's more is that the Alpina's 442 pound-feet of torque eclipses the M4's 406 lb-ft, to say nothing of the 435i's 300.
Best of all, Alpina just confirmed via Facebook that it'll offer the B4 in convertible form, bringing the resulting BMW Alpina B4 Bi-Turbo Cabrio to the Geneva Motor Show. We'd expect the weight penalty to knock it slightly off the coupe's quoted 4.1-second 0-60 time, but not by much. If only BMW were to bring this one Stateside like it does with the B7 sedan.

Hamann BMW M6 Mirror can now cash the checks its body writes

Anyone remember the Hamann Mirror? Need a refresher? The Mirror is German tuning company Hamann's idea of a BMW M6. It was shown at the 2013 Frankfurt Motor Show as an M6 Gran Coupe, sporting a ridiculous paint job and some meaty, multi-spoke 21-inch wheels.
Consider this car the Mirror Mark 2. Based on the M6 Coupe, Hamann has applied a similar visual theme, using the same 21-inch wheels from 2013. Whereas the Gran Coupe rode around with a stock powertrain, though, there's been no such restraint with the two-door Mirror. A fine 620 horsepower is available from the 4.4-liter, biturbocharged V8, an increase of 60 horsepower. Torque is up as well, from 501 pound-feet to a whopping 560, meaning this M6 has speed to match its looks. Hamann claims the Mirror's newfound grunt allows it to hit 62 miles per hour faster than the standard M6 (we'd certainly hope so), although it won't mention a specific number.
The suspension, meanwhile, has been dropped 1.37 inches, or about a third of an inch lower than the Frankfurt Mirror. That drop is complemented by the Mirror's bodywork, including the exposed, carbon fiber hood and the flared fenders, which can now accommodate the enormous 305/25 rear rubber. Hamann has also paid some attention to the front and rear aerodynamics.

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.