2001 Mercedes S430 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.

Edmunds ranks the best used cars for 2013

When people ask us what car we would recommend for them, it's usually not easy to answer. To make a useful recommendation we must consider which of the numerous vehicle segments fits their needs best, and then choose one of the many vehicles offered in each segment. For some people, new cars don't meet their expectations of value, because they lose so much of it the moment they are purchased and driven off the dealer lot. For them, there's always the used-car market, where great deals can be found, but cars' histories of reliability and maintenance records - and perhaps that Certified Pre-Owned warranty - become ever-important factors playing into purchase choice.
To help out, Edmunds has done us the favor of assembling a list of the best used vehicles money can buy, covering model years 2006-2011, according to what it considers the most important criteria when shopping for used autos: reliability, safety, value and availability. That means unreliable, unsafe, super-expensive or limited-edition models don't appear on the list, but instead cars from each segment that are more likely to satisfy the general population.
There are some real goodies on the list, including but not limited to vehicles such as the capable Honda Fit, the cultish Honda Accord coupe (which can be had with a 240-horsepower V6 and a six-speed manual transmission some years), and the powerful Chevrolet Corvette. While Edmunds' choice of the Volvo C70 for best used convertible baffled us at first (not that it's a bad car), it redeemed itself by stating that the Mazda MX-5 still is an unofficial top choice if you don't require more than two seats.

How could a lifted Mercedes-Benz G63 AMG be more awesome? Add an axle

We are fully confident in saying that this will be the most amazing thing you see all day. First of all, it's a Mercedes-Benz G-Wagen - in AMG spec, no less. And it's being shown off in high-definition video glory, blasting through the desert, jumping over sand dunes, and generally being awesome. But here's the kicker: It has six wheels. Three axles. And they're all driven. Holy $%!#.
Under the hood is AMG's usual 5.5-liter twin-turbocharged V8, and total output is rated at 536 horsepower and 560 pound-feet of torque. That's impressive and all, but do keep in mind that the G63 6x6 weighs in at 8,322 pounds or, you know, the weight of two E-Class sedans. Combine that with its 18 inches of ground clearance, 37-inch tires and five locking differentials and you've got a vehicle capable of, well, everything you've ever imagined or will ever imagine for the rest of your life.
But the goodness doesn't stop once you open the doors. Oh, no. This thing is fit for a king - or a sheik, more appropriately - with ultimately luxurious seating for four. The rear bench seat has been removed in favor of two bucket seats with a fixed console in the middle, and the rear seats have been moved back beyond the usual B pillar to allow for more legroom.