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Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.

Recharge Wrap-up: Tesla sells Model S 85 and 70D in Malaysia, Chevy Spark EV built using clean energy

Tesla will send Model S 70D and Model S 85 EVs to Malaysia for leasing to government-linked companies. Only those companies will have access to the models as a two-year lease, which will be imported and leased by Malaysian Green Technology Corporation. The plan is part of an initiative by the Ministry of Energy, Green Technology and Water to allow government officials and other influential people to get to know the electric vehicles and the benefits that come along with them. Most of the 120 vehicles available will be the 70D model, and the lessee companies will have the option to purchase the cars at the end of the two years. Read more from Paul Tan's Automotive News. Wanxiang is hosting students from Delaware in China as part of a program to learn Mandarin and visit schools and science and technology sites. Wanxiang, the auto parts company that acquired Fisker (which had manufacturing based in Delaware) and battery maker A123 Systems, will give the students tours of its solar technology facilities, among other places, and see what daily life is like for families in the region. The program helps students interested in science and technology to foster marketable skills — like learning a foreign language — that will help them get jobs in industries around the world. Read more at Delaware Online. The Chevrolet Spark EV's electric motor (pictured) and drive unit are manufactured using clean energy. The e-motors building of the General Motors Baltimore Operations complex has a new rooftop solar array and uses LED and CFL lighting, helping the building recently earn LEED Silver certification. The landfill-free facility also takes advantage of the 1.23-megawatt solar array on the grounds, helping it source six percent its energy from renewable sources. The plant has reduced its energy intensity by 15.5 percent in three years, and continues to work toward reducing consumption and sourcing clean energy. "We believe reducing our environmental footprint is good for the climate and good for our business," says GM Executive Director of Global Public Policy Greg Martin. Read more in the press release below. Spark EV Motor Plant Fueled by Green, Clean Energy ENERGY STAR®, USGBC and Maryland state agency recognize facility's efforts WHITE MARSH, Md. – Chevrolet recently began selling the Spark EV to Maryland commuters able to take advantage of the state's robust charging infrastructure.

Watch Wired go hands-on with Tesla Model S 4.0

Our friends at Wired recently got their hands on the latest software release for the Tesla Model S. The 4.0 release adds a few interesting bits of functionality to the EV, including voice control for the navigation and telephone systems as well as Slacker Radio. Tesla employed Google voice-recognition software for the Model S, and Wired says the system is "far easier and more intuitive than most." High praise.
The update also adds another level of customization to the EV's steering wheel controls. The right knob now offers finer audio volume control while the left knob can be configured to handle everything from temperature setting to fan speed or even the opening and closing of the sunroof.
Wired also reports the 17-inch touch screen on the Model S now seems more responsive and that the update includes new graphical displays for the vehicle's range. Other nice tricks include revised throttle response and an adjustment to the vehicle's door handles - now owners need only approach their Model S for the door handles to pop out from their hiding places. You can check out the video below for a closer look.