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Mercedes introduces the details of the C450 AMG 4Matic

We saw the AMG Sport models joining the C-Class line in Detroit, but Mercedes has waited until the press launch of the Mercedes-AMG C63 to give us the details. In case you've forgotten about how this new puzzle piece fits, there's Mercedes-Benz, there's Mercedes-AMG, then there's the Mercedes-Benz AMG Sport line slotted in between for those who want sporty luxury but not too much of either. This is the second variant in that line-up, and also the second to get V6 power, following the GLE450 AMG Coupe. In the case of the C450 AMG 4Matic, that means a twin-turbo six-cylinder with 367 horsepower and 383 pound-feet of torque, an increase of 38 hp and 29 lb-ft over the C400 4Matic on which it's based. It goes much closer to proper AMG territory with its looks and features, with that sharp, chrome-trimmed lip in front, the oblong lower intakes, lightweight wheels, and a "special AMG badge" on the front fenders. In back, the sedan gets a spoiler on the trunk, the wagon gets a roof spoiler. There's a suspension highly derivative of that on the C63 AMG, with three-stage dampers. So too the five drive modes laid out like on traditional AMGs, the 7G-Tronic automatic transmission, the ESP with Curve Dynamic Assist, and it will even sound close to an Affalterbach special thanks to a sports exhaust. Cabin occupants can play the real deal with sport seats and a flat-bottomed wheel with red cross-stitching. We don't have a price yet, but there will probably be plenty of room between the price of the AMG C63 and the $48,950 C400 4Matic to make buyers happy. The press release below has all the info. Related Video: The new C-Class models from Mercedes-AMG: Mercedes-AMG C 63 and Mercedes-Benz C 450 AMG 4MATIC Mercedes-Benz C 450 AMG 4MATIC: Second AMG sports model with V6 power Driving Performance – the AMG brand claim and typical character traits can now be experienced by an even broader target group. The new C 450 AMG 4MATIC expands the product range of the sports car and performance brand within Mercedes-Benz with another new AMG sports model. As an attractive entry into the world of AMG, the C 450 AMG 4MATIC combines a 270 kW (367 hp) 3.0-litre V6 biturbo engine with a permanent Performance all-wheel-drive system and sophisticated suspension technology adopted from the Mercedes-AMG C 63. This all results in fascinating driving performance and the hallmark emotional expressiveness of the brand.

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.

Recharge Wrap-up: Houston's bus revival, autonomous trucks on the Autobahn

A documentary shows how Houston, Texas significantly improved its outdated bus system. Called High Frequency: Why Houston is Back on the Bus, the short film describes how the city reimagined its bus system to become more efficient, more useful and more popular. Despite some opposition, the change has proven to be effective, with bus ridership up eight percent in three months, and light rail ridership up due to complementary bus routes. See the video above, and read more at CityLab. Automakers sent autonomous semi trucks on the German Autobahn as part of the European Truck Platooning Challenge of 2016. Mercedes-Benz, Volvo and Scania, among other groups, sent platoons of trucks between Stuttgart, Germany, and Rotterdam, Holland. In Mercedes's platoon of three trucks, the lead truck was fitted with lasers and other sensors to guide the convoy down the road. The two following trucks relied on vehicle-to-vehicle communication to trail 50 feet behind the lead, making room for cars to come between them and closing the gaps when able. The close following distance provides fuel economy gains of up to 10 percent in the rearward trucks on account of the reduction in drag. Read more at Hybrid Cars. Renault has reduced NOx emissions in its Euro 6b diesel vehicles in real world driving conditions. By improving its exhaust gas recirculation systems and NOx traps, nitrogen oxide emissions are cut in half on average, under certain driving conditions. The improvements will be included in vehicles leaving the factory beginning in July of 2016. Beginning in October, owners of Renault Euro 6b diesels can have the modifications added to their cars for free. Read more from Renault. Tata Technologies is creating an innovation lab in California to partner with EV technology companies. Having a tech center in California allows Tata to work on technologies that will largely be deployed in the company's main market of Asia. "Today, we are partnering with companies and startups who have aspirations to sell in China, but a lot of what they do is in California," says Samir Yajnik of Tata Technologies. Read more from The Economic Times. BMW's i Ventures is investing in mobility-as-a-service software provider RideCell. RideCell provides technology for services such as carsharing, ridesharing and other transit services. "The convergence of transportation trends in cities is of key importance to BMW," says Ulrich Quay, head of BMW i Ventures.