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Watch Schumacher's hot lap of N"urburgring in Mercedes F1 car

In advance of the Nürburgring 24-hour race last weekend, Mercedes-Benz put on a demonstration that had Michael Schumacher playing catch-up in a Formula One car against four examples of AMG metal. There were four cars sent off in staggered starts before Schumacher: an A45 AMG, E63 AMG 4Matic, SLS AMG Black Series, and an SLS AMG GT3 car. "Mr. Formula One," as the German television commentators call him, left three minutes after the SLS AMG GT3.
There are two videos of Schumacher's lap, the first is on-board footage - and even though there were several GoPros on the car the POV never cuts away from the front wing. You can hear the throttle and tell he's not pushing it, you can also tell how bumpy the track is. The second video is footage from the German Sport1 channel - with commentary in German - that shows all the cars taking off and takes the aerial view of proceedings. He looks to be going a lot faster in that one. You can compare and contrast yourself with the videos below.
Oh, and it's worth noting that, even with the likely restricted car, and the made-for-TV environment, Schumi turned in a quick lap. The nose camera shows the F1 car start to slow down on the back straight, near the start/finish line, right around the modern-length track record time of six minutes and eleven seconds.

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.

2014 Mercedes-Benz S500 Plug-in Hybrid for fat cats frugal with fuel

Judging by how long we waited to get a clear shot of the Mercedes-Benz S500 Plug-in Hybrid, you'd have thought hybrid cars were only driven by Terminators and that the technology arrived only 48 hours ago through a wormhole in the Mercedes stand. The newest member of the Mercedes-Benz S-Class hybrid band - joining the S400 Hybrid and S350 BlueTEC Hybrid, it hits notes like a 5.5-second sprint from standstill to 62 miles per hour, up to 19 miles of ion-powered running and uses three liters of gasoline per 100 kilometers in Europe (78.41 mpg US, but our mpg test cycle is different than their mpg test cycle).
The lump up front is a turbocharged, 3.0-liter V6, the lump in back - note the reduction in trunk space - is a pack of lithium-ion batteries that juice an 80-kilowatt electric motor. Other than having four drive options for controlling electric drive and battery usage, it's all S-Class all the time, with leather-covered everything and those mountainous thrones that bring to mind words like "Archduke" and "Papal."
You'll find our hard-earned gallery from the Frankfurt Motor Show floor above, and more words of information in the press release below.