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Rebel Ram TRX prototypes spied on video playing in Michigan dunes

A group of Ram Rebel TRX prototypes has been caught on video testing in Michigan's Silver Lake Sand Dunes. This marks a change of scenery from our last prototype views, which took place on city streets in Detroit and in Arizona. Jordan Denhoed caught the video from a camera mounted on his truck, following the prototypes through the hills. The type of terrain and the presence of a Ford F-150 Raptor reinforce the idea that no matter what else the production Rebel TRX can do, it wants to compete with the Raptor on the Raptor's home field. Denhoed was able to get close enough once to hear the sound of the supercharger working in the 6.2-liter Hellcat V8. Unlike the Rebel TRX concept that was billed with 525 horsepower, the expectation now is that the production version will work up the Hellcat's typical 707 horsepower and shift through a 10-speed automatic. The power figure might have something to do with the staggered wheel lug pattern on the most recent prototypes — six lugs in front, eight lugs in back. The Rebel TRX proto caught in Arizona in August last year used the six-lug pattern all around. Other engine details are fuzzy. Motor1 credits an "insider source" with info that Ram has 40 test mules running, 10 of them in white, 30 of them in black, and one of those testers supposedly has an 840-hp Dodge Demon engine under the hood. The same source said the production version won't use the dial shifter, but a traditional shifter on the center tunnel. At the opposite pole concerning engines, Mopar Insiders reports that the less powerful, less expensive Rebel TR version, using a 7.0-liter V8 with roughly 520 hp, has either been canceled or delayed so Ram can devote resources to the Rebel TRX. The crew-cabbed prototypes in the video all wear the blacked-out treatment and Laramie Black front ends, fender flares over beadlock-looking wheels, and twin pipes. It's hard to tell how much lift comes with the remote-reservoir Bilstein shocks since the wheel arches have been cut out to make more room, but the concept had 13 inches of travel. It's rumored that ARB locking diffs will come on each axle. Having been promised for showrooms by 2022, it's likely we have a couple of years to wait we see the Rebel TRX's final form. We should get our first look at the F-150 Raptor fitted with the Mustang Shelby GT500's Predator V8 around the same time.

Ward's Automotive Ten Best Engines of 2014 dominated by diesels, turbos

With the Car and Driver Ten Best decided, the North American Car and Truck of the Year finalists announced and Cadillac, Ram and Subaru chalking up wins with Motor Trend, it's fair to say that the automotive awards season is in full swing. The next set of trophies to be handed out will be from Ward's Automotive, which has announced the winners of its 2014 10 Best Engines.
The latest contest was marked by the widespread emergence of diesel power and the continued success of turbocharged engines. There was even an electric motor on this year's list. In fact, only three of the ten winners were naturally aspirated and only two winners returned from last year.
"We weren't looking to throw the bums out, as they might say about an election. We were just really impressed with the flood of new powertrains," said Ward's Automotive Editor-in-Chief Drew Winter. Those new powertrains include the 83-kilowatt electric motor from the Fiat 500e, the 1.0-liter, EcoBoost three-cylinder from the Ford Fiesta and the 2.0-liter turbodiesel from the Chevrolet Cruze.

These are the 'Greenest' and 'Meanest' cars in 2015

As has become tradition, the American Council for an Energy-Efficient Economy (ACEEE) has come up with a ranking of what it refers to as the "greenest" cars of 2015, and, by way of contrast, a list of the so-called "meanest" cars, so those who value eco-friendliness over all else can choose which vehicles they should or should not consider buying. As you may expect, electric cars make up the majority of the greenest cars on the list, but, perhaps surprisingly to many, the Tesla Model S didn't make the cut. It's worth noting, too, that where the electricity an owner uses to charge their electric vehicle has a big impact on its overall environmental impact. "A car that is charged using electricity generated from natural gas or renewables is going to have significantly less impact on the environment than one charged on a coal-heavy grid," says ACEEE lead vehicle analyst Shruti Vaidyanathan. The ACEEE's list for 2015 looks very different than it did in 2014. It's an interesting collection, though – and we're sure this goes without saying, really – we'd recommend doing a bit more research into each vehicle and how it might fit into your daily life before making any purchase decisions. Click here to see the ACEEE's list of the Greenest and Meanest vehicles sold in the United States in 2015. Green Bugatti Chevrolet Fiat GM GMC Mercedes-Benz Nissan RAM smart Toyota greenest greenest cars