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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.

Watch the National Corvette Museum sinkhole being filled in by R/C cars

Okay, so not exactly cars, but Bobcats - but still quite cool. You might remember that the National Corvette Museum had that little divot that needed to be filled in. Turns out the construction firm of Scott, Murphy & Daniel doing the work is using two remote-controlled Bobcats to fill the sinkhole with "manufactured sand," which in this case is crushed limestone. It appears that the Bobcat company has offered remote operation since at least 2007 via a wireless transmitter that works up to 1,500 feet away. So yes, that means two SMD employees stand on the edge of the pit and flick joystick levers for hours at a time, one in charge of a Bobcat with a roller-compactor attachment, the other in charge of a Bobcat with a bucket. And that, to us, is a pretty good way to earn the daily bread. Check out the video above for the latest sinkhole update. News Source: National Corvette Museum via YouTube Auto News Weird Car News Chevrolet GM Videos rc car remote control National Corvette Museum bobcat ncm

Chevy Chaparral 2X Vision Gran Turismo concept blends the past and the future

The Chevrolet Chaparral 2X Vision Gran Turismo is the rare concept car that salutes a seminal moment in history, yet also borders on science fiction.
Revealed Wednesday at the Los Angeles Auto Show, the concept uses the name of one of Chevy's historic racing partnerships, with Chaparral Racing, which dates to the 1960s. Chaparrals raced successfully at a range of levels, including IndyCar, Trans-Am and SCCA competition.
But the history ends there, as the concept's main purpose is as a racecar in a downloadable update for the PlayStation 3 game Gran Turismo 6.