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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.

'Charge lock' on Nissan Leaf doesn't actually prevent cable theft

Is it a feature or a bug? According to AutoblogGreen reader Francois Viau, the locking mechanism that holds the 110V trickle charge cable to his Nissan Leaf is too weak, and that's a problem. That's because while he thought the cable was locked to his car during a charge session at work, someone stole the cable, and it cost him $2,200 to replace it (in Canadian dollars, from the Nissan dealer). To see just how easy it is to unlock the mechanism, Viau had a "small assistant" jimmy it open with a plastic comb on video (watch it below). "The charge lock feature on Nissan Leaf is not intended to prevent theft of the charging cordset." – Brian Brockman We wondered if this was a common problem and, through the magic of Facebook, we had AutoblogGreen reader Phil Tipper try it out on his 2013 SL Leaf. He said he used an insulated handle flat screwdriver and was not able to defeat the lock. "I admit that I didn't want to force the mechanism for fear of breaking it, it didn't look like that kid used much force at all," he said. "Maybe this guy's mechanism was damaged in the theft and now it's very easy to trip the lock out of the way." Fifty percent of a sample size of two isn't a reliable metric, but if you're worried about locking your cable in place, you can see some of Viau's anti-theft solutions here (in French, with pictures). Turns out, though, that the white plastic bit that prevents the cable handle from working during a charge isn't really an anti-theft device. Brian Brockman, senior manager of corporate communications for Nissan North America, told AutoblogGreen that, "The charge lock feature on Nissan Leaf is not intended to prevent theft of the charging cordset. It is designed to discourage someone from unplugging the vehicle while a charging session is in progress. The trickle charge cable features a small hole in the release button to allow the owner to insert a lock to reduce the chance of theft." So, now you know. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

2015 Nissan 370Z Nismo

If you blinked, you missed the opportunity to pick up the last iteration of the 370Z Nismo, because after just a touch over a year of availability, Nissan is replacing it with this updated 2015 model - the third 370-based iteration from the brand's in-house tuner. Consider this version to be the 370Z's swan song. An all-new version is expected soon with a downsized turbo mill (something in the vein of a 240Z would not be impossible). That reality aside, the latest 370Z Nismo is a compelling package. It looks like a million bucks, takes a corner with verve, and gets belated tech goodies. Here are our impressions from a drive we took last week near Nissan's US headquarters in Tennessee.
Driving Notes
The Recaro seats are wonderful (shocker!). In fact, the interior in general has a much more strapped-down feel about it. A run-of-the-mill 370Z feels pretty great, although it's not a place for the big-boned. As with past Nismos, upgrades include contrasting colors on the faux-suede seat inserts, the gauge hood, the ten and two positions on the steering wheel, and a red centering stripe on the wheel. The upgraded materials are all nicely chosen and the cabin is a very sexy place to live - weirdly practical, too, considering the huge cargo area. Checking the "Tech" model option box brings a 7.0-inch nav screen in place of the upward swinging door over a storage cubby, a much-needed backup camera, an impressively good Bose stereo, and de riguer Bluetooth connectivity with audio streaming. Everything seems to work as advertised.