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Mercedes previews sleek concept for CES

It was over two months ago that we spotted a mysterious cloaked prototype said to belong to Mercedes, but we didn't know much about it at the time. And we still don't, but at least the German automaker has given us an idea of what to look forward to. Released on Facebook is this teaser image showing a silhouette of what appears to be that same concept car. The image is accompanied only by these few words: "The future will be bolder than you've ever imagined" and tagged by an accompanying #mbCES - which tells us only that, a) it's futuristic, which we already knew, and b) that it's coming to the CES, set to be held around a week from now in Las Vegas. The sleek one-box design appears to have some sort of appendage atop its roof – just the kind of periscope that might house, say, some cameras – leading to speculation that the idea behind this concept would be to showcase autonomous driving technology. We'd also be surprised if it weren't electric powered and – given the backdrop for its reveal – all the technology Daimler can throw at it. But one way or another, we'll be finding out soon, so watch this space. News Source: Mercedes-Benz via Facebook CES Mercedes-Benz Technology Concept Cars

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.

Jalopnik and Consumer Reports see who can pull off the best snow drift

The weather throughout much of the United States is pretty awful at the moment with some combination of extremely low temperatures, inches of snow and maybe some ice underneath it all. The folks at Jalopnik and Consumer Reports are making the absolute best out of a difficult situation by heading to CR's snow-covered test track and attempting to make the longest drift in a quartet of very different performance vehicles. Jalopnik brought along a Mercedes-Benz E63 AMG S Wagon, a Subaru WRX STI, a BMW 228i and a 1973 Volkswagen Baja Bug (heck yeah!) for the challenge. Also, the track was perfect for this group, with a mix of packed snow in places and still a few inches of unsullied powder in spots too. Ostensibly the goal was to get the tail to step out through a particular corner, but in reality this was more about having hilarious fun in the snow with fast cars. The result just looks like the best time humanly possible in this weather.