2014 Nissan Pathfinder Platinum 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.

2018 Autoblog Technology of the Year finalists

After months of prepping and several days of testing, we narrowed the field for Autoblog's 2018 Tech of the Year award to the Nissan Rogue with ProPilot Assist semi-autonomous driving system, the Lexus LC 500h and its new hybrid powertrain, and the Chevy Colorado ZR2 and its trick Multimatic spool-valve off-road shocks. Three very different cars with very different technologies duking it out for the award. Look for news of our winner at the 2018 Detroit Auto Show. We hand out this award every year to the technology or feature that we feel moves the bar forward for the automotive industry. Read more here on how our testing process works. We discuss, debate and count up score sheets, judging each vehicle and technology on a few different criteria. Is its purpose noteworthy? Does it work well? Does it advance the industry? The Nissan Rogue with ProPilot Assist was actually a prototype, as the technology will first debut in the 2018 Nissan Leaf. Still, we're here to test the tech and not the car. ProPilot Assist combines adaptive cruise control system combined with lane-keeping assistance. The system uses sonar, radar and a number of cameras for some light semi-autonomous driving and enhanced safety. While these systems aren't new individually, Nissan's system is affordable, intuitive, and coming to a mainstream product — democratizing the tech in a novel way, if you will. That's why it's here. The Lexus LC 500h uses a new powertrain that Lexus has dubbed the Multi-Stage Hybrid System. Basically it combines two types of transmissions — a CVT and a four-speed automatic — in a single unit mated to a naturally aspirated V6. That's complex and unorthodox technology, and Lexus engineered it to give drivers the efficiency of a CVT without sacrificing driving enjoyment. The package is subtle, working in the background to create a nearly seamless driving experience. It's engaging in a way most other hybrids can only dream of. The fact that it's wrapped in such gorgeous sheetmetal only makes things better. The Multimatic spool valve shocks in the Chevy Colorado ZR2 might seem low-tech compared to ProPilot Assist and the Lexus Multi-Stage Hybrid, but they represent a completely novel application of a technology that several years ago was so expensive that it was reserved for top-tier race cars. Like the LC 500h, these shocks really change your perception of how a vehicle like this should drive.

Weekly Recap: The cost of Tesla's ambitious plans for growth

Tesla has ambitious plans for growth, and they won't come cheap. The electric-car maker said this week it plans to spend $1.5 billion in 2015 to expand production capacity, launch the Model X crossover and continue work on its Gigafactory, which is being built outside of Reno, NV. The company is also investing in its stores, service centers and charging network, which is expected to grow by more than 50 percent this year. Plus, it's still working on the Model 3, which is scheduled to arrive in 2017. "We're going to spend staggering amounts of money on [capital expenditures]," Tesla chairman and CEO Elon Musk said on an investor call. He then added: "For a good reason. And with a great ROI [return on investment]." They're bold plans, and Musk is clearly willing to put Tesla's money where his mouth is. That's why the company is projecting a whopping 70-percent increase in deliveries this year, for a total of 55,000 cars. A large chunk of that growth will come from the addition of the Model X crossover to Tesla's portfolio, and the company already has nearly 20,000 reservations for it. More than 30 Model X prototypes have been built, and it is expected to begin shipping to customers this summer. Musk said he's "highly confident" the vehicle, which has experienced delays, will arrive on time. The company also had more than 10,000 orders for the Model S at the start of the year. The big spending plans caused a stir, even though Tesla spent $369 million on capital expenditures in the fourth quarter alone. In a note to investors, Morgan Stanley analysts called the costs required to keep pace with Tesla's demand "eye-wateringly high," and said the $1.5-billion figure was nearly double their expectations. Still, Musk is not thinking small and suggested that his company could be as big in 10 years as Apple is now if Tesla's growth continues. His optimism comes as the company actually reported a $294-million net loss in 2014, more than its $74-million loss in 2013. The money, however, continues to roll in, and total revenues increased to $3.2 billion in 2014, up from $2 billion in 2013 and a dramatic surge from $413 million in 2012. More of the same is expected this year, and the company could reach $6 billion in revenue. As Morgan Stanley noted, it "seems Tesla is preparing to be a much larger company than we have forecasted." It's certainly spending that way.