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SRT Viper dukes it out with Mercedes SLS Black Series in new Head 2 Head

In Episode 36 of Motor Trend's Head 2 Head, now that the Corvette ZR1 is no more, Jonny Lieberman has to look overseas to the Mercedes-Benz SLS AMG Black Series for a challenger with similar philosophy to the SRT Viper: long hood hiding a high-horsepower engine set way back, rear-wheel drive, tiny trunks. That puts the Viper's 8.4-liter V10 with 640 horsepower and 600 pound-feet of torque against the SLS AMG's 6.2-liter V8 with 622 hp and 468 lb-ft.
However, the congruences in philosophy and magnitude of numbers doesn't translate to the driving experiences of the two, which are literally and figuratively on different continents. Lieberman gets a handle on the two of them on Northern California roads, Randy Probst then finds out how, and how quickly, they can lap Laguna Seca.
They both get kudos for being improvements on their original sources, but only one of them can take the win. You can find out by watching the video below.

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

Mercedes GLE63 AMG Coupe teased

The very concept of the luxury crossover coupe often gets flamed for being not only ugly, but also impractical. However, after years of letting BMW blaze the trail with the X6, Mercedes-Benz recently entered the field with the GLE-Class Coupe. Now, it's time to add a little more pepper to the package with the newly teased GLE63 AMG Coupe. The video above gives a solid look at the three-quarters perspective of this high-performance high-rider. Compared to the standard version buyers get a different front bumper with larger air intakes and an arching wing that almost appears to be floating in space. Flashes in the clip show off AMG branding for the brake calipers, steering wheel and seats, as is expected. This is clearly not a vehicle that'll appeal to everyone, but it offers an alternative to the latest BMW X6 M with 567 horsepower and 553 pound-feet of torque. Mercedes isn't saying what lies under the hood of the GLE63 AMG Coupe yet. Although given the name, we suspect a version of the brand's 4.0-liter twin-turbocharged V8 is the likely choice. It's offered in the latest C63 AMG with either 469 or 503 hp. The debut for this CUV coupe is possible at the upcoming Detroit Auto Show, where the standard GLE Coupe will be unveiled.