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This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.

2016 Chevrolet Camaro: Notes from the reveal

The 2016 Chevrolet Camaro debuted Saturday evening in Detroit at an enthusiast-oriented event near the city's IndyCar course. While the big news was the Camaro's 200-pound weight loss, tighter chassis, and a snorting new V8, plenty of other morsels of Camaro info came out. Here's some of the more interesting stuff we heard. • The 2.0-liter inline four-cylinder is the first turbocharged engine in a Camaro. • The LT1 borrowed from the Corvette Stingray marks the third time a Camaro has used an engine with that badge. It was previously used in 1970-72 (Z/28), 1993-97 (Z/28), and 1996-97 (SS). • The Camaro was revealed in a tent before nearly 1,000 enthusiasts, General Motors executives (including CEO Mary Barra) and mere feet from the Grand Prix course where IndyCars will run in two weeks. • Chevy hopes to continue to attract new customers with the Camaro and said 63 percent of the fifth-generation buyers were new to the brand. • GM product boss Mark Reuss neatly summed up the Camaro's handling character. "It's wicked fast and extremely nimble." • Reuss on the design goal: make it "look like a car for tomorrow instead of a car from yesterday." • Reuss' first car was a 1967 Camaro, and he's reiterated his passion for the car. "People want to be seen in a Camaro, and that never goes away." • Chevy North America president Alan Batey said he plans to line up a red Camaro as soon as the order bank opens. We assume he'll have early access to that. • Though the appearance is similar, the sixth generation of the Camaro appears a little sleeker and is more aerodynamic thanks to 350 hours in the wind tunnel. Only two parts, the SS badge and the rear bow-tie emblem, are carryover. • Al Oppenheiser, the Camaro's chief engineer, said most of the options (except Magnetic Ride Control, which is SS exclusive), will be offered on the inline four. The engine will be capable of propelling the Camaro to a sprint to 60 miles per hour in well under six seconds. "We don't want to ... make it feel like an excuse car," he said. • Without revealing specifics, Oppenheiser said every Camaro variant will be faster than the model it replaces. •The interior is vastly improved. We got an up-close look in the cabin of one of the cars revealed with a red and white layout, and the materials are much better. The setting is more colorful, and 24 different ambient lighting shades are available. Related Video:

GM resumes production of its 3.0-liter turbodiesel straight-six

General Motors temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine in August 2021 due to a supplier shortage. Reports claimed the pause would last through 2021, but the engine is already back in production. Enthusiast website GM Authority learned from sources inside General Motors that the straight-six is once again coming off the assembly line at the Flint Engine Plant in Flint, Michigan. There's no official word on precisely what the problem was linked to and whether it was related to the on-going chip shortage that's wreaking havoc across the automotive industry. All we know is that the pause lasted for about two weeks. Called LM2 internally, the six is available in Chevrolet's Tahoe, Suburban, and Silverado 1500 and in GMC's version of these trucks. It's also an option in the Cadillac Escalade. It develops 277 horsepower at 3,750 rpm and a V8-like 460 pound-feet of torque at 1,500 rpm in every application, and it allows these big behemoths to post surprising fuel economy numbers. Fitted to a rear-wheel-drive Tahoe, the Duramax returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make it more efficient than a Blazer. Demand for the diesel-powered trucks is relatively high. While the shortage undoubtedly took a toll on sales, the Duramax represented 8% of Suburban sales and 6% of Tahoe sales in May 2021. There are no other diesel-burning full-size SUVs available new so they have the market to themselves. On the truck side, Ram still makes the EcoDiesel available on some 1500 trims but Ford abandoned the segment. Related Video: Featured Gallery 2021 Chevrolet Tahoe RST View 24 Photos Chevrolet GMC Truck SUV Diesel Vehicles