2009 Nissan Maxima Sv Sedan 4-door 3.5l on 2040-cars

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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.

2014 Nissan Rogue

When I first started in this whole automotive journalism biz, I held a sort of hodgepodge receptionist/gopher/production assistant role, and each morning as the staff filed in, I'd ask them how they liked whatever car they were assigned to drive the previous night. Most of my colleagues would regale me with anecdotes about how good or bad a vehicle was, but one co-worker, every single morning, would answer my query with the exact same phrase: "It was fine."
I always assumed this was just a brush-off, an "ask me again after I've had a cup of coffee" sort of response. But then I found myself in a similar moment of brevity following the launch of the 2014 Nissan Rogue earlier this week. After returning home, a friend asked me what I thought of the new Rogue, and I replied, word for word, "It was fine."
And, well, it was. Nothing worth wasting exclamation points over, good or bad. Aside from something like the interesting-to-drive Mazda CX-5 or funky-looking Jeep Cherokee, nothing in this class really tries to set the world on fire. And that, right there, is fine. Nissan doesn't need to do anything crazy with its second-generation Rogue. It just needs to offer a well-equipped crossover that's handsome, functional, efficient and priced right - sticking to the same formula that made the first-generation model so successful while offering the latest crop of creature comforts in a more modern package.

Check out Nissan's clever digital Smart Rearview Mirror

Using cameras in place of a car's rearview mirrors has long been a feature of pie-in-the-sky concept cars, although so far, it's failed to translate into the world of production vehicles. Nissan is looking to change that, though, with its new Smart Rearview Mirror.
With a flick of a switch, drivers can jump back and forth between what they'd normally see through the rearview mirror and the camera's feed from the back of the car.
The Smart Rearview Mirror blends everything we know about traditional reflective glass mirrors with a video feed from the rear of the car into a form factor that's immediately recognizable to the average motorist. With a flick of a switch, drivers can jump back and forth between what they'd normally see through the rearview mirror and the camera's feed from the back of the car. The mirror itself features an integrated LCD display with a four-to-one aspect ratio.