Engadget

Tesla's CEO, Elon Musk, has been the focus of many headlines lately due to a certain, well-documented kerfuffle with The New York Times. Today, however, the automotive company's chief isn't questioning any reviews. Instead, he's taken to the Advanced Research Projects Agency for Energy summit to share his belief that Tesla Motors will pay off that $465 million loan from the US Department of Energy well ahead of when it's expected to -- in five years, rather than ten, to be precise. Musk's comments shouldn't come as a surprise, however, given that the Model S maker has been paying its DOE-borrowed cash on time and before the deadlines -- something it's been able to accomplish despite being far from a money-making machine at the moment. For the Department of Energy, meanwhile, this all sounds like music to the ears, especially since it knows that not all EVs always work out as planned.

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While we've seen more than a few flexible batteries in our day, they're not usually that great at withstanding tugs and pulls. A team-up between Northwestern University and the University of Illinois could give lithium-ion batteries that extreme elasticity with few of the drawbacks you'd expect. To make a stretchable battery that still maintains a typical density, researchers built electrode interconnects from serpentine metal wires that have even more wavy wires inside; the wires don't require much space in normal use, but will unfurl in an ordered sequence as they're pulled to their limits. The result is a prototype battery that can expand to three times its normal size, but can still last for eight to nine hours. It could also charge wirelessly, and thus would be wearable under the skin as well as over -- imagine fully powered implants where an external battery is impractical or unsightly. There's no word yet on whether there will be refined versions coming to real-world products, but we hope any developments arrive quickly enough to give stretchable electronics a viable power source.

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If you're a gamer and love you some bright colors, Nintendo's got just the bundle of joy with a couple of new 3DS models. "Pink Gloss" and "Light Blue" colors will arrive to the handheld console on March 20th along with a boost in memory from the usual 2GB to 4GB for 15,000 yen (about $160). The rug might be pulled from under your brightly-hued dreams if you're not in Japan, though -- only players in that country will be able to nab it.

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No, it's not the world's most conspicuous surveillance van -- it's one of the first steps toward 5G data. NTT DoCoMo has just confirmed that the gear-laden vehicle above successfully conducted a 10Gbps wireless test in Ishigaki this December with the help of the Tokyo Institute of Technology. The dry run relied on frequencies and bandwidth well outside of usual cellular service, in the 11GHz band with 400MHz of spectrum, but proved that it was possible to blow past the speeds of LTE and LTE-Advanced while moving outdoors; the test used 24 antennas to maintain the link. DoCoMo ultimately hopes for similar speed in frequencies over 5GHz, and it's not shy about hoping the technology will define mobile communication as it improves. Although we're not expecting this kind of breakneck performance in a phone for years, it's good to know that 4G isn't necessarily the end of the line.

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Despite the flood of 4K TVs that are emerging this year, there won't be a lot of content to play on them in the near future short of space galleries and the World Cup. The team at DirecTV can't provide an immediate solution, but it's at least getting ahead of the curve with a spate of new trademarks. The satellite giant now owns trademarks for the terms 4K, 4KN, 4KNET, 4K Network and 4KNetwork, the lot of which would cover broadcasts, streaming and VOD -- all hinting that the company is at least toying with the prospect of a 4K-only channel or service. Don't get your hopes up, however. DirecTV has declined comment, and there's a big difference between securing a trademark and having the resources to do something with it. We'll have to wait for sufficient capacity on TV networks -- and in our wallets -- before 4K TV channels exist as more than names.

[Image credit: Brian Cantoni, Flickr]

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Google's #ifihadglass contest advertises for "bold, creative individuals" to start carrying pre-production builds of Glass later this year. Since most people flatter themselves as dauntless and inspired, Google's challenge casts a wide net and applications are piling into Twitter. The contest apparently also seeks prosperous individuals willing to pay $1,500 for the prize, plus travel expense to pick it up. There might be good fiscal reasons for Google's parsimony, but I can't help noting that the $12 million of revenue generated by eager beta testers represents five-thousandths of 1 percent of the company's market cap, or one-tenth of a percent of its liquid cash.

Putting aside whatever demographic-shaping is in play, the more interesting question is whether Google will find its desired 8,000 bold creative types. The applications do not foretell blazing originality among foaming early adopters. If there is a depressing strain of mediocrity in the #ifihadglass Twitter stream, perhaps it speaks less to human limitation and more to intrinsic constraints of the device as it is currently understood.

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"We've partnered with some of the biggest and most influential social networks in the world, including Facebook and Ustream, to bring gamers' friends into games like never before," former Gaikai CEO David Perry told attendees of Sony's PlayStation 4 event last week. It was the only mention Ustream got during the show, despite the video streaming service playing a critical role in Sony's next video game console. In-tandem with the PlayStation 4's new DualShock 4 controller and its "Share" button, users will be able to quickly upload saved gameplay video clips or directly stream their game out to the internet. The console's lead system architect, Mark Cerny, expanded on the importance of the Share button and its implications to the PlayStation 4 during last week's presentation. "Social play is so important to PlayStation 4 that we've added in hardware to support it, in the form of dedicated, always-on video compression and decompression systems," he said.

We saw a bit of the game sharing / streaming interface during Sony's presentation, but were left wondering about specifics: how will discovery work? and what of other, non-gaming Ustream content? Thankfully, Ustream CEO Brad Hunstable was able to offer up most of our answers in a recent interview. "Our goal is to allow discovery in a very clean user experience, both in discovery on the console itself and on various platforms that the content'll be available on (like Ustream, Twitter, and Facebook)," Hunstable said. He wouldn't speak to the specifics of how that discovery will work, nor would he say if you'll be able to sign-in simply using your PlayStation Network ID or if you'll have to sign up for a separate Ustream account, but he stressed that the decisions being made are, "based on what's easiest and best for the gamer." That same rubric is (thankfully) being applied to functionality. "The goal is to make sure it's very easy -- one click of a button, super simple -- and most importantly make sure it looks really, really good. And is viewable wherever people want to watch it from," Hunstable said.

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If you've ever tried to play audio from a web app in Chrome for Android, you've likely had the fun cut short the moment your attention wandered over to Google Maps or Instagram. A stable version of Chrome 25 is here to address that headache. Audio in the new browser build will continue to play in the background, and optionally pauses if there's an incoming phone call. Google has less perceptible upgrades behind the scenes, as well: multi-touch zoom and scrolling are faster, and the V8 rendering engine should be quicker on the draw with interactive pages. Those who won't wait for anything, including the end to an audio stream, can hit Google Play for the Chrome refresh.

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