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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

8 automakers, 15 utilities collaborate on open smart-charging for EVs

We're going to lead with General Motors here. GM is one of eight automakers working with 15 utilities and the Electric Power Research Institute (EPRI) at developing a "smart" plug-in vehicle charging system. Why did we start with GM? Because it's the first automaker whose press release we read that mentioned the other seven automakers. Points for sharing. For the record, the collaboration also includes BMW, Toyota, Mercedes-Benz, Honda, Chrysler, Mitsubishi and Ford. The utilities include DTE Energy, Duke Energy, Southern California Edison and Pacific Gas & Electric. The idea is to develop a so-called "demand charging" system in which an integrated system lets the plug-ins and utilities communicate with each other so that vehicle charging is cut back at peak hours, when energy is most expensive, and ramped up when the rates drop. Such entities say there's a sense of urgency to develop such a system because the number of plug-in vehicles on US roads totals more than 225,000 today and is climbing steadily. There's a lot of technology involved, obviously, but the goal is to have an open platform that's compatible with virtually any automaker's plug-in vehicle. No timeframe was disclosed for when such a system could go live but you can find a press release from EPRI below. EPRI, Utilities, Auto Manufacturers to Create an Open Grid Integration Platform for Plug-in Electric Vehicles PALO ALTO, Calif. (July 29, 2014) – The Electric Power Research Institute, 8 automakers and 15 utilities are working to develop and demonstrate an open platform that would integrate plug-in electric vehicles (PEV) with smart grid technologies enabling utilities to support PEV charging regardless of location. The platform will allow manufacturers to offer a customer-friendly interface through which PEV drivers can more easily participate in utility PEV programs, such as rates for off-peak or nighttime charging. The portal for the system would be a utility's communications system and an electric vehicle's telematics system. As the electric grid evolves with smarter functionality, electric vehicles can serve as a distributed energy resource to support grid reliability, stability and efficiency. With more than 225,000 plug-in vehicles on U.S. roads -- and their numbers growing -- they are likely to play a significant role in electricity demand side management.

Mercedes F1 boss Toto Wolff takes a stake in Aston Martin

LONDON — Mercedes Formula One boss Toto Wolff has taken a stake in British sportscar maker Aston Martin, whose executive chairman Lawrence Stroll runs the Racing Point F1 team, according to company filings. A Mercedes F1 spokesman said Wolff's move was purely an investment on the Austrian's part and would be diluted by a rights issue on Monday from 4.77% to less than 1%. "Fully diluted following the pending rights issue, this investment will represent a 0.95% stake in the company," he added. "It is a financial investment and Toto's partnership and executive role with Mercedes are unaffected by the transaction." Swiss billionaire Ernesto Bertarelli has also bought a 3.38% stake which will be similarly diluted. Wolff previously had a 16% shareholding in former champions Williams but sold that after he joined the Mercedes team, where he serves as principal and owns 30%. Canadian billionaire Stroll, whose son Lance drives for Racing Point alongside Mexican Sergio Perez, is close to Wolff. The Silverstone-based team — to be renamed Aston Martin next year — use Mercedes engines and gearboxes. Mercedes-Benz's parent Daimler also has a small stake in Aston Martin. "It's clear that Aston are now Mercedes' B team," the Daily Mail quoted one Formula One insider as saying. Wolff's future at Mercedes has been the subject of some media speculation, with the 48-year-old linked variously to senior management roles with Liberty Media-owned Formula One and at Aston Martin. His Aston Martin shares were bought from Yew Tree Overseas Limited, a vehicle controlled by Stroll who acquired a roughly 25% percent holding in Aston Martin with a consortium of investors. Mercedes have won the past six Formula One drivers' and constructors' titles but have six times world champion Lewis Hamilton out of contract at the end of the 2020 season, which has yet to start due to the COVID-19 pandemic. Hamilton, who has also been linked to Ferrari, had told reporters before the global crisis changed the sporting and financial landscape that his decision would depend on Wolff's plans. The Briton is now expected to stay at Mercedes, with a radical overhaul of Formula One's sporting and technical regulations postponed to 2022. Related Video: Motorsports Aston Martin Mercedes-Benz