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Mercedes G500 4x4 rumbles into view

Mercedes keeps raising the bar with the G-Class: just when you think the legendary Gelandewagen couldn't get any more hardcore, it mashes the throttle and does exactly that, plowing through a bank of snow, sand, hell or high water in the process. What you see here is the latest. It's called the G500 4x42. Aside from the various engine specs, the G-Class has been offered in a number of body-styles. Right around the same time that the two-door convertible was discontinued, Benz rolled out the indomitable G63 AMG 6x6 – a half-million-dollar, six-wheeled monster truck powered by Affalterbach's 5.5-liter twin-turbo V8. Evidently enough people liked the idea but didn't see the point in that extra set of wheels, so Mercedes has toned it down – just a little – but kept the high-riding suspension. The result is the truck we've seen testing a couple of times now in a bright shade of Hulk green, and which is now just about ready for its debut. On the scale of extreme G-Wagens, it slots in between the standard model and the 6x6, keeping the jacked-up suspension and giant wheels, but losing the extra axle. The G500 moniker also indicates that it'll at least be available with the 382-horsepower, naturally aspirated, non-AMG version of the 5.5-liter V8 that we'd know as the G550. Just how much of a premium Benz will charge for the beefed-up version, we don't know, as further details are set to be released next week ahead of a likely debut in Geneva. But hopefully it'll be closer to the $115k it gets for the standard version than the $500+k the 6x6 goes for.

Ford Mustang Shelby GT350R named Road & Track Performance Car of the Year

With a 526-horsepower, 5.2-liter V8 that roars to 8,250 rpm, it's really hard to consider the 2016 Ford Shelby Mustang GT350R an underdog in any fight. However, the Shelby held the lowest as-tested price and was only middle of the pack in terms of power in Road & Track's 2016 Performance Car of the Year challenge. The 'Stang's numbers clearly didn't tell the whole story about the potent coupe because Ford's muscle car grabbed the title in this year's test. A model needs to be new or significantly updated to be eligible for the honor, and R&T found an impressive slate of eight candidates this year. The challengers included the Bentley Continental GT3-R, Cadillac ATS-V Coupe, Chevrolet Corvette Z06, Dodge Viper ACR, Mercedes-AMG GT S, and Porsche Cayman GT4. The Ferrari 488 GTB was the most expensive of the bunch with an as-tested price of $347,942, which is five times more than the Shelby. Once the group was together, R&T hustled them over curving roads and on the National Corvette Museum Motorsports Park. There was a lot to love about the Shelby, even in this impressive crew. "With a flat-plane crank and Sport Cup 2 tires, the GT350R is a Mustang turned up to 11," editor-in-chief Larry Webster said in the announcement of the results. The GT350R joins some great company. Past winners include the Porsche 911 GT3 last year and the Corvette in 2013. For some fantastic photography and the complete appraisal of these performance machines check out R&T's website for the full story. Related Video: ROAD & TRACK NAMES THE FORD MUSTANG SHELBY GT350R THE 2016 PERFORMANCE CAR OF THE YEAR New York, NY (November 9, 2015) – Road & Track today named the Ford Mustang Shelby GT350R the 2016 Performance Car of the Year, beating out seven of the world's best new sports cars. The article appears in the December/January issue, on newsstands November 17, and on RoadandTrack.com. "With a flat-plane crank and Sport Cup 2 tires, the GT350R is a Mustang turned up to 11," said Larry Webster, editor-in-chief of Road & Track. "Not only does the car have soul and harness so much firepower with such ease, but the real achievement here is that it's so approachable. It's a car you can't help but love." The Mustang Shelby GT350R was the winner by a runaway vote.

McLaren, Red Bull and Ferrari call for unfreezing F1 engines

Formula One is a hugely expensive sport. Not only do you have enormous salaries and logistical expenses, as you would in any other sport, but each team also spends huge sums developing their own chassis from the ground up – and so too do the participating automakers in developing the engines. One of the ways the series organizers mitigate those costs is by freezing development. So once the new crop of V6 turbo hybrid powertrains were developed, that was it. But now three of the of the sport's leading teams are calling on the FIA to unfreeze engine development. Their reason? Unfair advantage. There's little question that Mercedes did the best job of developing its "power unit" to meet the new regulations that took effect at the beginning of this past season. That's how the Mercedes team won all but three of the grands prix this season and finished with at least one car on the podium at every single race. It's also a big part of how the teams that bought their engines from Mercedes this season managed to consistently outperform the other non-works-supported teams. That clear advantage is why Red Bull, Ferrari and now McLaren are calling for engine development to be unfrozen. Their argument is that, under the current locked-down status quo, their engine suppliers (Renault, Ferrari and Honda, respectively) cannot possibly catch up. So unless the FIA and Formula One Management want the next few seasons to be the kind of absolute blow-outs that this past season was, these leading teams argue, the powers that be are going to have to make some changes. For its part, Mercedes naturally counters that unfreezing engine development would send costs spiraling out of control. But then of course it stands to lose the most by re-opening engine development. If those three teams, however, closely intertwined as they are with the three other engine suppliers participating in next year's championship, manage to solicit enough support from the other customer teams and bring the matter to a vote, Mercedes may very well find itself out-numbered. News Source: ESPNImage Credit: Patrick Baz/AFP/Getty Motorsports Ferrari McLaren Mercedes-Benz F1 engine