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Rare Isdera Imperator 108i flexes its considerable muscles

The Isdera Imperator 108i is a remarkably rare supercar from the late 80s and early 90s. Born of a Mercedes-Benz concept car, it's powered by a range of AMG-developed V8s, with five to six liters of displacement, depending on the engine. The example shown here, lapping the legendary Spa-Francorchamps circuit, features the most potent 6.0-liter V8 available. And rather than just being driven about on a perfectly clean racing line, it's freaking power sliding!
Yes, there's something eternally childlike about a wedge-shaped supercar from our formative years being flung about a Belgian racetrack. Adding to the appeal is the Imperator's stumpy, periscopic rear mirror, sticking out of the roof. Even after being out of production for 20 years, this is still a wild, wild car and we'd happily snap up the opportunity pilot one of the 36 Isderas that were built. Take a look below for the full video from Spa.

Mercedes-Benz S-Class presentation leaked, debuting in May

WorldCarFans was reportedly sent what looks like a dealer presentation on the coming V222 series 2014 Mercedes-Benz S-Class. There have been hints for years as to the kinds of technology the world's best-selling large luxury sedan will contain, and it appears those hints had some foundation. To be shown in Germany on May 15 before a launch window that runs from September to November this year, the evolutionary design will be built of aluminum and steel, using that lighter material for the front end, roof and "detached body parts."
Among the new options buyers will be able to choose are the Rear Seat Package with rear seatbelt airbags and active buckles that extend, a Warmth and Comfort Package with heated seats front and back, heated armrests and side panels, and power rear seats with active ventilation and memory function. There's a chauffeur seating option that comes with 10-way adjustable rear seats, an extendable footrest and folding tables in the front seatbacks.
Blatant technology will be on display via two 12.3-inch screens, one for the dash cluster and one for the COMAND infotainment screen on the instrument panel. The third generation of Nightview Assist Plus will be able to detect animals as well as humans, and the next generation of Surround View will provide high-res views all around the car. A touchpad and a color head-up display will arrive in 2015. It will be the first Mercedes-Benz to utilize LED lighting everywhere, inside and outside the car.

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.