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Tesla Model S costs one nickel per drag race [w/video]

Historically, the intersection between electric vehicles and drag racing has been really small - or so we guess, at least. But the advent of Tesla in the auto marketplace, and the subsequent performance offered up to drivers by way of battery-powered cars, has caused even racy publications like DragTimes to get in on the action.
Having posted several YouTube videos featuring the Tesla Model S doing pulls at the local strip, DragTimes encountered questions about just how many races that car might be able to run before needing to re-juice its battery pack. The publication monitored the energy being used by the Tesla during full-throttle, quarter-mile runs, and determined that the net use (after energy from the regen braking was added back in) amounted to just 0.5 kWh per go. Considering that the full battery capacity is 85 kWh, DragTimes figured that the Model S is good for a remarkable 170 races before needing a recharge. By that math, and using electricity costs in DragTime's home state of Florida, each race would cost just a nickel and a penny's worth of electricity.
With respect, that theoretical number is probably way too high. For starters, the car would expend some energy getting to and from the starting line between races. Perhaps more critically, the system is designed to not allow for a completely full charge or deletion of charge, so the car can't use all 85 kWh. Still, 100 runs is in the realm of possibility. In the video below, the narrator makes mention of 150 runs, which is optimistic but more likely. Cheap thrills, in any case (once you've paid for the car).

Recharge Wrap-up: Model X pinch sensor update, Karma plans first store

Tesla has improved Model X pinch sensor function in its latest over-the-air update. As we've seen, the pinch sensors already stop the falcon wing doors from completely shutting when they sense an obstruction. Now, though, the doors retract slightly after the sensors are triggered. While the pre-update doors didn't appear to do as much damage to human fingers as they do to various foodstuffs, it definitely looked uncomfortable, especially when one's hand is stuck in the partially closed door. Now, any pinch that does occur should be brief. See the updated sensors at work in the video above, and read more from Teslarati. Karma Automotive will move to Kawasaki's former headquarters in Irvine, California where it will also open its first store. The revival of the now defunct Fisker will sell its Revero plug-in hybrid through both dealerships and company-owned stores like the one planned for its new two-building campus. The property owner, Bixby, had planned to renovate the site, but now says Karma will make its own improvements. Bixby said it was seeking, "a progressive-minded tenant that would value the unique configuration," and appears to have found just that in Karma. Read more at Electrek, or from the OC Register. San Francisco is asking residents for help in expanding its subways. Using an online tool called Subway Vision, users can draw their own subway lines and stations that they'd like to see built and submit them to planners. Listening to the public is a useful tool for the city because, as Grahm Satterwhite, San Francisco Municipal Transportation Agency's principal planner, admits, "Transportation planners may be too close to a problem to see the solution." This approach allows the subway expansions to "reflect the vision of not just a few transportation planners, but of all San Franciscans," he says. Read more from FastCo.Exist. Toyota is continuing its commitment to Yellowstone National Park with a sustainable Youth Campus for environmental education. The automaker donated $1 million to Yellowstone for the facility, which is seeking Living Building Challenge certification. It will have onsite wastewater treatment for its locally sourced water usage, and will generate all of its electricity needs from photovoltaic panels, with excess to put back into the grid. The campus will have classrooms and residences for students and staff for its youth programs.

For Tesla, the energy-storage company, the magic is in batteries

Tesla Motors Chief Elon Musk has always been a big-picture guy, and the company's chief technology officer appears to be following suit. JB Straubel, who was a keynote speaker at the Joint Venture Silicon Valley symposium near the automaker's Northern California home base recently, says the company is just as much an energy-storage company as a car maker. And he said the rate of battery-technology improvement shows no signs of slowing down, according to Green Tech Media. Straubel estimated that battery performance has improved about 40 percent during the five years between the debuts of the Tesla Roadster and the Model S. Additionally, battery density has doubled during the past decade and continues to ramp up fairly steeply. He noted that further near-term improvements will come not from the size and shape of the cell, but from improved cathode and anode materials. Those energy improvements won't just help the cars. Tesla uses a two-megawatt-hour battery pack to supply as much as 10 percent of the peak energy used at the company's factory in Fremont, CA, and will double the size of that battery-powered energy capacity within the next few months, Straubel says. Automakers like Tesla and Nissan are licking their proverbial chops at the prospect of substantially improved battery performance paired with declining battery costs as more and more lithium-ion battery packs get produced. Late last year, Navigant Research estimated that lithium-ion battery costs would fall by almost two-thirds by 2020, down to a low $180 per kilowatt hour. That should make electrified powertrains price-competitive with conventional vehicles, as electric vehicles could then command a price premium as low as $2,000 compared to their gas-powered brethren.