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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.

Governor Rick Perry backs bid for Tesla Stores in Texas

It's funny how the prospect of a $5-billion investment in a state has the ability to focus minds. Take Texas, for example. The Lone Star State has long had laws prohibiting automakers from selling directly to consumers, even if the manufacturer didn't already sell through franchise dealerships. Last year, a bill went to the legislature that would have allowed Tesla Motors to sell directly to its customers, but despite entreaties and a visit from CEO Elon Musk, lawmakers didn't pass it. Sure, Texans can still buy the a Model S, but the process is a bit cumbersome. With the prospect of an expensive battery gigafactory and the jobs it would bring, however, Texas Governor Rick Perry taken to the airwaves cable news outlet Fox Business to make his supportive position known. To be fair, the one-time Republican Presidential hopeful has been in favor of Tesla's sales model for some time. The difference now is he is being proactively vocal about it. Appearing on Opening Bell with Maria Bartiromo, Perry spent close to eight minutes pitching a new approach to dealership laws in his state, at one point referring to the traditional dealer model as "antiquated" and encouraging legislators to have an "open and thoughtful" conversation and decide whether or not they want to lead the country when it comes to manufacturing. If you think that he has become warm and fuzzy about environmental issues, Perry reminds us after a brief discussion on 2014 and 2016 elections – yes, he may run again – that he has no qualms about continuing to rely on fossil fuels, stating that he thinks the most important thing the federal government can do to impact the economy right now is to "say yes" to the Keystone XL pipeline. You can view the segment in its entirety be simply scrolling below.

Tesla Model S track tested at Buttonwillow raceway

Many television viewers will know about the concept of a seven-second delay that allows producers to bleep any loose profanity during live shows before they make it to air. And we're imagining the driver of a Tesla Model S shooting down California's Buttonwillow Raceway may have cursed a bit once the electric vehicle's power limiter kicked in to keep the battery's heat down, because that added about seven seconds to the typical lap time around the 3.1-mile course, Teslarati says. Power-limiter not withstanding, the luxury EV appeared to do pretty well around that circuit, which is located near Bakersfield and about 130 miles north of Los Angeles. One happy dude at Teslarati turned in laps as low as 2:19 and change, beat out a Porsche 911 in acceleration and managed to keep the car on the track. The Tesla topped out at 113 miles per hour, but all that speed consumed electricity at about three times the typical rate. That means that, for the first 10 laps (which were the fastest), the 33 miles of actual distance used up 90 miles worth of range. And with the track's 240-volt outlets working to various degrees and Tesla's nearest Superchargers 50 miles away, there were some potential problems making sure the car could do all the driver wanted. But they're problems we'd love to have. Check out the 11-minute video of the escapade below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.