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Shelby GT350R offers first mass-produced carbon fiber wheels

In the world of race engineering, reducing total weight is good, but reducing unsprung weight is flippin' fantastic. That's the reason Ford is pushing the envelope in terms of technology for the Shelby GT350R's wheels. Joining the likes of Koenigsegg in the offering, Ford has teamed with Australian outfit Carbon Revolution to produce the CF rollers en masse for the first time. Destined for the hubs of the new Shelby GT350R, the new hoops weigh just 18 pounds each, versus the 33-lbs weight of a similar aluminum wheel. On top of slashing up to 60 pounds in unsprung weight, there's such a reduction in rotational inertia – 40 percent, versus aluminum wheels – that Ford actually has to recalibrate the magnetic ride control system and springs. Thanks to, we're guessing, scenes of crashed Formula One cars disintegrating and spewing shards of carbon fiber all over the track, Ford seems quite keen to do away with the idea that CF is strong, but brittle. The company conducted extensive shock testing, ramming a wheel into a curb at speed. According to the Blue Oval, the lightweight wheel allowed the suspension to respond so quickly that the impact was "greatly diminished," causing the tester to run the experiment again, thinking there'd been a mistake. After recording brake rotor temperatures of 900 degrees Celsius (over 1,650 degrees Fahrenheit, or well past the point that aluminum or magnesium would melt) during testing, Ford and Carbon Revolution actually redesigned the wheels to "a thermal standard more suitable for motorsports," by adding an "incredibly thin, nearly diamond-hard coating that reliably shields the resin from heat." The same process was used to protect engine turbine blades on the Space Shuttle. While the work by Ford and Carbon Revolution should make GT350R customers excited, the work being done here could have serious implications for performance cars in the future. That's the real takeaway here, and is something that should leave fans of all performance vehicles excited.

Road & Track samples rare 1995 Ford Mustang Cobra R

The modern performance variant of the Ford Mustang enjoys a long, illustrious history. While well-known examples like the Boss 302, Shelby GT350, and Shelby GT500 get all the attention, the modern versions of these cars may not have been possible had it not been for the three generations of the Cobra R, sold in 1993, 1995, and 2000. Limited to just 250 examples, the second-generation model wasn't as rare as the Fox-body Cobra R that preceded it, but they were still pricey and difficult to acquire. Customers were required to hold a competition license in order to take delivery, and prices were roughly equivalent to $59,000 in today's money. As Road & Track tells it, neither of those facts were a handicap – Ford sold its entire roster of 1995 Cobra Rs in just five days. RT's Jack Baruth managed to score a drive in an extremely low-mileage example of this now-vintage track star. He delivers an interesting look into the way a performance car from two decades ago behaves in today's world, and finds that despite its age, the 1995 Cobra R is still "a true sweetheart." Check out the full feature over at Road & Track. Related Video:

Recharge Wrap-up: Nissan earns Energy Star award, ethanol production forecasts adjusted

The US Energy Information Administration has adjusted its ethanol production forecasts. It predicts an average of 944,000 barrels per day for 2015. That number is up from 2014 production levels of 935,000 barrels per day, but it is lower than last month's projection for 2015, which was 947,000 barrels per day. The EIA forecasts 937,000 barrels per day in 2016, down from its prior forecast of 942,000 barrels. Biodiesel production averaged 83,000 barrels per day last year, with projections of 82,000 for 2015, and 84,000 for 2016. Read more from Ethanol Producer Magazine. Boston Mayor Martin J. Walsh supports the proposed Diesel and Vehicular Emissions Ordinance. The ordinance, filed by City Councilor Stephen Murphy, would require emissions control retrofitting of all pre-2007 vehicles belonging to the City of Boston, as well as those of any contractors it hires. The ordinance also seeks to create a simple city-level standard of enforcing the state's anti-idling laws. "The asthma rate in Boston's neighborhoods continues to climb," says Councilor Murphy. "By further tightening air quality standards, as this ordinance does, we will make Boston's neighborhoods healthier." Read more at DieselNet. The Michigan Blue Economy report profiles Ford for its water-saving sustainability efforts. The report notes that Ford reduced its water use by 61 percent, or 10 billion gallons, from 2000 to 2013 by "cutting the water used in everything from cooling towers to paint operations." As part of its Global Water Management Initiative, Ford has decreased its total water use at its facilities worldwide from 64 million cubic meters per year to 25 million cubic meters. Read more from Ford, or at the Michigan Blue Economy website. The EPA has named Nissan an Energy Star Partner of the Year for the fourth year in a row. The automaker received the Sustained Excellence Award for its efforts to reduce energy use and greenhouse gas emissions in its operations. Nissan reduced the amount of energy used to build vehicles by 13 percent in 2014. Energy reduction efforts include switching to LED lighting and developing an environmentally friendly paint process. Nissan also works with schools in Tennessee and Mississippi to help them reduce energy usage. "Since this initiative began in 2012, we've helped about 30 schools make the esteemed Energy Star certification list," says Nissan's John Martin. Read more in the press release below.