2014 Toyota Prius Two 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.

Everybody's doing flying cars, so why aren't we soaring over traffic already?

"Where's my flying car?" has been the meme for impending technology that never materializes since before there were memes. And the trough of disillusionment for vehicles that can take to sky continues to nosedive, despite a nonstop fascination with flying cars and a recent rash of announcements about the technology, particularly from traditional automakers. Earlier this month, Toyota applied for an eye-popping patent for a flying car that has wheels with spring-loaded pop-out helicopter rotors. The patent filing says the wheels/rotors would be electrically powered, while in on-land mode the vehicle would have differential steering like tracked vehicles such as tanks and bulldozers. At an airshow in July, Aston Martin unveiled its Volante Vision Concept, an autonomous hybrid-electric vertical takeoff and landing (VTOL) vehicle it developed with Rolls-Royce. Aston says the Volante can fly at top speeds of around 200 mph and bills it as a luxury car for the skies. Audi used the Geneva Motor Show in March to unveil a flying car concept called the Pop.Up Next it developed with Airbus and Italdesign. If the Pop.Up Next, an electric and autonomous quadcopter/city car combo, gets stuck in traffic, an app can be used to summon an Airbus-developed drone to pick up the passenger compartment pod, leaving the chassis behind. Audi said that the Pop.Up Next is a "flexible on-demand concept that could open up mobility in the third dimension to people in cities." But Audi also acknowledged that at this point it has no plans to develop it. The cash-stoked, skies-the-limit Silicon Valley tech crowd is also bullish on flying cars. The startup Kitty Hawk that's backed by Google co-founder Larry Page announced in June that it's taking pre-orders for its single-seat electric Flyer that's powered by 10 propellers and is capable of vertical takeoffs and landings. The current version can only fly up to 20 mph and 10 feet in the air and has a flight time of just 12 to 20 minutes on a full charge. The Flyer is considered a recreational vehicle, so doesn't require a pilot's license. Uber says it plans to launch its more ambitious Elevate program and UberAIR service in 2023. "Uber customers will be able to push a button and get a flight on-demand with uberAIR in Dallas, Los Angeles and a third international market," Uber Elevate promises on its website.

Toyota, Nissan, Honda will work together on hydrogen filling stations

Japan's own version of the Big Three is taking on a transportation effort that's a far cry from the large-engined history of General Motors, Ford and Chrysler. In fact, Toyota, Nissan and Honda are looking to do their part – and maybe a little more – for the environment by working together to collaborate on accelerating the deployment of hydrogen fuel delivery in Japan. More refueling stations means more convenience for prospective hydrogen fuel-cell vehicle owners. Toyota says the specifics, including investment amount and the number of stations to be deployed, will be "determined at a later date." Still, the effort dovetails with that of the Japanese government. That government announced a so-called Strategic Road Map for Hydrogen and Fuel Cells last June and subsequently said it would start offering about $20,000 worth of incentives for fuel cell vehicle buyers. In December, Toyota started selling its first mass-produced fuel cell vehicle, the Mirai, in Japan and said it would almost triple production to 2,000 vehicles in 2016 from 700 this year. Last month, the Tokyo government began talks with Toyota and Honda to collaborate on ensuring that there'd be at least 6,000 fuel-cell vehicles on Japan's roads in time for the 2020 Summer Olympics in Tokyo. Tokyo officials are looking to have 100,000 fuel-cell vehicles on the city's roads by 2025. Check out Toyota's press release below. Toyota, Nissan, and Honda to Jointly Support Hydrogen Station Infrastructure Development Toyota Motor Corporation, Nissan Motor Co., Ltd., and Honda Motor Co., Ltd. have agreed to work together to help accelerate the development of hydrogen station infrastructure for fuel cell vehicles (FCVs). Specific measures to be undertaken by the three manufacturers will be determined at a later date. For hydrogen-fueled FCVs to gain popularity, it is not only important that attractive products be launched-hydrogen station infrastructure must also be developed. At present, infrastructure companies are making every effort to build such an infrastructure, but they face difficulties in installing and operating hydrogen stations while FCVs are not common on the road. Following the formulation of its Strategic Road Map for Hydrogen and Fuel Cells in June 2014, the Japanese government has highlighted the importance of developing hydrogen station infrastructure as quickly as possible in order to popularize FCVs.