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VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes

The case of Dupont and Honeywell's refrigerant R-1234yf is doing the exact opposite of keeping things cool. The two chemical companies have spent years and hundreds of millions of dollars developing R-1234yf to replace R-134a, the new refrigerant shown to be 99.7-percent kinder to the environment than the one it is meant to succeed. Part of that development has been years of testing by governments, outside safety agencies and automakers to approve the chemical for use in cars. It passed the protocols necessary for the European Union to declare that new and significantly revised cars from 2013 onward needed to use R-1234yf, and mandated that every car as of 2017 must use it.
Enter Daimler AG. The automaker created a head-on collision test with a B-Class at their Sindelfingen test track that would lead to the pressurized refrigerant being sprayed on the engine. The result in 20 out of 20 test was that the refrigerant burst into flames as soon as it hit the hot engine, while Daimler says that R-134a does not catch fire in the same test. Another unexpected result of the R-1234yf test was the release of hydrogen flouride, a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it that turned the windshield white as it began to eat into the glass.
Said a Daimler engineer in a Reuters piece, "It was scarcely believable. The most complicated lab tests conducted using the most sensitive measuring instruments around found nothing and all we do is drive a car around a couple of times, open a tiny hole in the refrigerant line and the next thing you know the car is on fire." So Daimler said it wouldn't use the refrigerant, and it recalled the cars it had already shipped with R-1234yf.

Mercedes celebrates with World Championship edition SL63

Mercedes has plenty to be celebrating at the moment, having just won the Formula One World Championship in spectacular style – taking the constructors' title by a huge margin and the top two slots in the drivers' standings as well. It almost goes without saying that the German outfit would celebrate with a special edition, and that's just what we're looking at here. Presented at a special celebratory Stars & Cars event in Stuttgart in front of 50,000 jubilant fans, the Mercedes-Benz SL63 AMG World Championship 2014 Collector's Edition is based on Benz's twin-turbo V8-powered roadster but with some choice upgrades. Two versions will be offered: one in black with gold accents (displayed with the Silverstone circuit layout), the other in white with silver accents (and the Hockenheim map). One was designed by Lewis Hamilton, the other by Nico Rosberg. We'll let you sort out which one was done by which, but either way there'll only be 19 examples, each dedicated to a different grand prix circuit in the championship which Mercedes positively dominated – winning all but three, scoring eleven one-two finishes and landing on the podium at each and every one.

Mercedes teases IAA Concept for Frankfurt

Mercedes-Benz is being coy about the IAA Concept you see above. The Germany automaker admits its name is short for Intelligent Aerodynamic Automobile, but isn't letting out much more. In a very short statement, Mercedes describes the IAA as "two cars in one: an aerodynamics world champion and a four-door coupe embodying irresistible design." Does that mean the IAA points the way forward for the next version of the brand's shapely CLS, which it also refers to as a four-door coupe? Probably, but we're not sure where the "Intelligent" part comes in. Will it be an electric machine that presages a competitor to the Tesla Model S? We'll just have to wait and see. One thing is for certain: The Mercedes IAA looks sleek. While the details of its design are shrouded in strategically placed shadows, we can clearly see a double-bubble roofline that flows seamlessly into a graceful hatch that reminds us of the Audi A7, which isn't a bad design to borrow cues from. The overall shape of the Intelligent Aerodynamic Automobile makes it look like bodywork shrink-wrapped atop the chassis as tightly as possible. We're keen to take a look at the IAA ourselves, and that's going to happen rather soon. Mercedes promises a debut at the Frankfurt Motor Show in the early afternoon (Eastern). Stay tuned. The Mercedes-Benz "Concept IAA" (Intelligent Aerodynamic Automobile) is two cars in one: an aerodynamics world champion and a four-door coupe embodying irresistible design. World premiere. September 14, 7.30 pm (CEST). Featured Gallery Mercedes IAA Concept teasers News Source: Mercedes-Benz via Facebook Design/Style Frankfurt Motor Show Mercedes-Benz Coupe Concept Cars Sedan