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Recharge Wrap-up: Mercedes B-Class Electric Drive is a rock star, FedEx tests electric trucks

The Mercedes-Benz B-Class Electric Drive is in a new music video for I Lived by OneRepublic. The band's singer, Ryan Tedder, has also been brought on as a brand ambassador for the German automaker. OneRepublic will also be performing the song at the Mercedes-Benz Media Night on the eve of the Paris Motor Show. No word if Mercedes plans to offer hordes of screaming teenage fans as an option package with the B-Class Electric Drive. See the video (the car shows up around the four-minute mark) or read more in the press release below. FedEx is testing converted electric delivery trucks with diesel range extenders. Looking to shrink its carbon footprint, the company has converted a handful of trucks as part of a pilot program. In addition to battery packs, each truck is equipped with diesel turbine generators (supplied by Ian Wright's company, Wrightspeed) to provide electricity when the battery is depleted. Because the diesel motors aren't powering the vehicle directly, they can continuously run at their most efficient speed, making the trucks about twice as efficient as those powered by traditional means. Read more at Wired. Ford's new aluminum-bodied F-150 will be 5 to 20 percent more efficient, the company says. The fuel economy gains depend on the particular version of the truck, but the biggest improvement will likely come from the 3.5-liter V6 and the 2.7-liter EcoBoost V-6. Automotive News predicts the F-150 SFE to be rated at 21 mpg city/28 highway/23 combined, which are identical figures to the Ram 1500 EcoDiesel. The result could be a noteworthy fuel economy battle between Ford and Ram trucks. Learn more at Automotive News. The US Department of Energy is providing $25 million in funding toward reducing the price of algal biofuels. The goal is to get the price of these renewable fuels below $5 per gasoline gallon equivalent (gge) by 2019, and less than $3 per gge by 2030. The money will fund projects to develop better algal cultures that produce biofuel and other useful bioproducts, and projects to boost biomass productivity. The DOE says it wants to help develop a "bioeconomy" that provides jobs, helps the environment and ensures energy security. Read more at Energy.gov. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Mercedes warms up the SLC

The Mercedes-Benz SLC moniker was once thought to be revived for the vehicle that became the Mercedes-AMG GT, but the German luxury brand is now rumored to use the name for its upcoming refresh for the SLK. Our spies recently snapped some shots of the updated hardtop convertible testing while not wearing much camouflage. These photos suggest not to expect any significant changes in styling for the refreshed SLK. The lower portion of the front bumper has a single center opening, and the grille gets the latest iteration of Mercedes' single-bar design. The camouflage offers more concealment at the rear, but there's clearly something to hide. The exhausts are better incorporated in the shape, as well. Mercedes is also expected to update the SLK's powertrains with the refresh into the SLC. There could be an AMG Sport version to slot between the regular model and full-bore AMG. Like the C450 AMG Sport, this one might use the brand's 3.0-liter, twin-turbo V6 with 362 horsepower. Related Video:

The most or nothing: Mercedes-Maybach S650 Cabriolet pushes the luxury limits

After the introduction of the Mercedes-AMG GT Roadster at the Paris Motor Show this fall, we informed you that Mercedes-Benz has a convertible conundrum, a surplus of drop-tops that seemingly threatens to self-cannibalize within the brand's ever-proliferating lineup. Benz's head of design, Gorden Wagener, who spends much of his time in Southern California, argues it's not a problem: Each convertible, in its ideal construction, would intrinsically vanquish any issues. "The bad is the enemy of the good," he said, not exactly quoting Nietzsche. Now, the three-pointed star brand has upped the top-down ante, with the unveiling this week at the Los Angeles auto show of the Mercedes-Maybach S650 Cabriolet, a vehicle so opulent, it sits in price and position atop the uber-luxury brand's current top-of-the-line offering, the $247,900 Mercedes-AMG S65 Cabriolet. View 24 Photos "Mercedes-AMG is our performance brand so it's all about performance stuff," says Wagener in a one-on-one interview on the roof of a Beverly Hills mansion just before the new car is unveiled. "Of course, Maybach has power, too, but it's the ultimate in luxury. So it's more on that side. And for me in the interior, it's the haute couture of the automobile, so we tried to up that a little more with details. And on the exterior, it's a more superb appearance up front, more chrome, more rich, and of course we tried to up that branding even more. The S-Class is the best car in the world, we consider, I always thought we could raise the Mercedes brand. And it's the same with the S convertible." Why does Mercedes-Benz need a flagship atop its flagship? Because, when climbing the mountain of automotive luxury there is always the customer who, when he or she reaches the pinnacle, wants more. A car brand, especially one with deep pockets and luxurious heritage like Mercedes, can always further gild the automotive lilies, creating a step up for those for whom the brand's motto, The Best or Nothing, is a literal life credo. "It's always our job to make it better," Wagener says. "Each little detail, the wood, the wood under cover of the cabriolet, the leathers. All the super luxury details that make a luxury car into a super luxury car. The key is to make a modern luxury design and not a traditional luxury design. There is definitely a market for traditional luxury, but we always wanted to have Mercedes, Maybach in particular, as a modern luxury car.