1990 Mercedes-benz 400-series 420sel on 2040-cars

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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.

Recharge Wrap-up: BMW i3 goes against Mercedes B-Class ED, Tesla good for business

Car and Driver has published a comparison test pitting the 2014 BMW i3 against the 2014 Mercedes-Benz B-class Electric Drive. The test not only measured the quality of the driving experience, but also all the quantitative details that are especially important when looking at electric vehicles. For instance, the Benz's real-world MPGe surpassed its own rating, but it still couldn't match the BMW. The B-Class, though, won in the range department. We won't spoil all the results, or Car and Driver's overall pick, but you can head over to the article to find out for yourself. Tesla's expanding business, including the Gigafactory being built in Reno, NV, is encouraging growth in the locales and associated businesses. Some of Tesla's suppliers are talking of relocation, wanting to be close to the action stirred up by the electric automaker's expansion. It makes good business sense to be in the same neighborhood as Tesla. "We can react quickly, and our engineers are constantly working with Tesla," says Futuris General Manager Sam Coughlin. Brookings Institute fellow Jennifer Vey says, "The land around Tesla is being redeveloped and reimagined. It's a mash-up of an anchor campus, startups, housing and transit, in a physically compact area where companies can cluster and connect." Read more at San Jose Mercury News. EVs are doing even more to reduce energy use clean up the air, according to new analysis from the Union of Concerned Scientists. According to findings, 60 percent of Americans now live in areas where EVs do more to reduce emissions than hybrids, up from 45 percent in 2012. Average electricity use is now 0.325 kWh per mile, down five percent from 2011. EV performance - in terms of mileage and emissions - is improving compared to traditional fuel vehicles, based on the sources of electricity in various regions. Read more from the Union of Concerned Scientists. Zipcar's carsharing network has launched in Paris. Zipcar is expanding across Europe, and has already established itself in Austria, Spain and the UK. According to Zipcar France's General Manager Etienne Hermite, "In a highly populated city, Zipcar's model has been proven to remove up to 15 personally owned vehicles from the road for each Zipcar in service, reducing parking demand, congestion and emissions." Zipcar European President Massimo Marsili hopes that most Parisians will eventually be just a short walk from a Zipcar.

The hottest modern sports cars rendered as rally racers

The modern-day World Rally Championship a monumental amount of fun to watch – I should know, as I recently was lucky enough to head to the UK to watch WRC Wales Rally GB – but even the most monstrous of the current WRC cars are based on fairly pedestrian European hatchbacks. Back in the heyday of rally, the Group B era in the 1980s, much hotter cars were the basis of even more incredible competition machines, for the most part. Take the exotic Ford RS200, or the Lancia Delta S4 with its twin-charged engine. And the hatchback-based Group B cars were bonkers, too. So what would some of our favorite modern cars look like if Group B had never ended? A British site named CarWow hired an artist to reimagine everything from the Rolls-Royce Wraith to the Porsche 911 as a retro-inspired rally car, and they were kind enough to let us share the results in the gallery above. The gallery features an Alfa Romeo Giulia in Martini livery, an Audi TT in classic Ur-Quattro colors, a Fiat 500 Abarth sporting massive flares and a hood blister full of auxiliary lights, a new Ford Mustang in RS200 livery, a Lancia Delta in Alitalia colors, a Porsche 911 in Rothmans livery, a Renault-Alpine in classic blue, a Rolls-Royce Wraith tribute to the Jules cologne Corniche Coupe, and a relatively modern-looking VW Touran. So far, the favorite around the office is the incredible Mercedes-Benz S-Class that is an homage to the wonderful 300 SEL 6.8 AMG "Red Pig" that essentially put AMG on the map. Check out the gallery above and see which one you like the best. Related Video: