2008 Bmw M3 Coupe $22,500 on 2040-cars

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BMW 4 Series Convertible basks in the sun

The BMW 4 Series Convertible will show its non-camouflaged face sometime later this year, but our spies recently caught this nearly naked prototype out getting some sun. As you'll recall, the droptop 4 Series replaces the 3 Series Convertible in the BMW range, and if our recent stint behind the wheel of the new 435i Coupe is anything to go on, this topless 4er should be quite a fun runabout for sun-drenched motoring.
To no one's surprise, the 4 Series Convertible shares all of its design with the 4 Series coupe, save, of course, the obvious roofectomy. Beyond that, the topless 2+2 will use the same engines and transmissions as the coupe, meaning it should arrive in the US in both 428i and 435i guises, powered by a 2.0-liter turbocharged inline-four and 3.0-liter turbocharged inline-six, respectively. Both six-speed manual and eight-speed automatic transmissions will be available.
The car spied this time around has the full M Sport visual treatment, with the revised (and better-looking) front fascia, larger 19-inch wheels, and attractive Melbourne Red paint. Interestingly, it appears this prototype has the standard xenon headlamp setup, rather than the full-LED option that's also available.

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.

Consumer Reports selling its road-tested roadsters [w/video]

Here's a chance to acquire a celebrity-owned vehicles, and this time at a discount instead of a premium. So the celebrity in this case is Consumer Reports, that magazine that could be equally adored and abhored by car enthusiasts. CR buys all of its test vehicles and usually finds willing second owners within its own ranks, but its opening its small used-car lot to the public. On the forecourt are four roadsters: an automatic 2012 Audi TT 2.0 TFSI Quattro S-Tronic with 6,600 miles for $36,500, a manual 2012 BMW Z4 sDrive28i with 8,400 miles for $45,000, a manual 2012 Mercedes-Benz SLK250 for $39,500 and a manual 2013 Porsche Boxster with 7,000 miles for $48,000.
Those numbers mean a savings of $9,000 to $10,000 before haggling - each car is listed with an "Asking price" so there could be some wiggle room if you show up with pockets full of dough and eyes full of serious intent. Since the money CR earns from the sales go back into the magazine's budget to buy more test cars, however, it probably won't take any oddball trades, so you can forget about getting any purchasing help from that track-day AMC Javelin project on blocks in the back yard.
The vehicles have been taken care of and spiffed up for sale; buyers will take delivery at the CR test track in East Haddam, Connecticut and get a tour of the facilities. While you're there they'll even take you on a lap around the track so you can feel how your car handles when driven by one of its testers. They will probably not help you with advice on which toaster and dehumidifier to buy - you'll still need to get a subscription for that. Have a look at the video below to see a day in the life of a CR test car.