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Boston bombers were tracked using Mercedes mbrace [w/video]

We now know Tamerlan and Dzhokhar Tsarnaev, the two brothers said to be behind the Boston Marathon bombings, planned to head for New York City to detonate more improvised explosive devices. As it turns out, that plan was foiled by the quick thinking of one Mercedes-Benz owner, diligent police work and the Mercedes-Benz mbrace system. When the brothers carjacked a 26-year-old Chinese entrepreneur identified only as "Danny," they didn't realize his Mercedes-Benz M-Class was equipped with the mbrace system, which can call for help in the event of an accident or track the vehicle in the event of a theft.
According to reports, the Tsarnaev brothers held Danny hostage for nearly 90 minutes while they drove around Boston forming a plan until they had to stop for fuel. When one of the brothers went inside to pay, the other put his gun down for a moment. Danny took the opportunity to unlatch his seat belt, open the door and run to another nearby gas station, where he told the owner to call the police.
When police arrived, they used the mbrace system to track the SUV after receiving Danny's permission, and it wasn't long before a shootout between police and the brothers ensued. When it was over, the eldest brother lay dead in the street. For more on the story, view the video report available below.

Maybach crossover looking more likely, Smart crossover possible

Mercedes-Benz executives are still making positive noises about the chances of a Mercedes-Maybach SUV. Following Daimler CEO Dieter Zetsche's answer of "most likely" at the Geneva Motor Show, Mercedes Cars head of sales and marketing Ola Kallenius told Autocar that a Maybach SUV based on the next-generation GLS is "the more likely scenario." That's the same Kallenius that told Automotive News just last November that "we have no plans for it [a Maybach SUV]." It's a subtle shift, to be sure, but it's still a shift. The GLS – introduced as the latest-generation GL in 2013 – is still undergoing testing for its its mid-cycle refresh, so a Maybach version is a few years off. That would, coincidentally, give Mercedes time to see how the other super-luxe entrants are faring, and prepare its charge accordingly. Autocar expects that should it be built, it will come when the GLS shifts to the S-Class platform and most likely get the twin-turbo V12 from the Mercdes-Maybach S600 sedan, although the company's 4.0-liter twin-turbo V8 is possible if there are strong intentions for the Chinese market. Also on Stuttgart's agenda of dreams is a Smart crossover, according to the report. It could be Smart's best chance at profitably extending the range, based on the mania for tiny utes, and that would help both Daimler and the ForTwo's Renault Twingo sibling. It sounds like this is a ways off, though, due to coming up with an engineering solution for the Smart's engine packaging. Related Video:

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.