【#科技头条#20130717】

【#科技头条#20130717】 1、Tesla特斯拉汽车公司提出超快速公交系统,太阳能供电,比目前的出行选择更便宜,整个交通系统不可能再崩溃。(USA Today)。 http://www.usatoday.com/story/tech/2013/07/16/tesla-motors-hyperloop-transit-electric-car/2521215/

Tesla Motors proposes 'hyperloop' transit system


If you still think electric cars or rocket ships are cool, you haven't been keeping up with Musk. His "hyperloop" is a proposed "really rapid transit system" that he says will be able to get a passenger from San Francisco to Los Angeles in a half-hour. That would mean travel at 800 miles per hour, or about twice the speed of conventional aircraft.
He has been a little vague on how this works, except to say recently that the concept is "a cross between a Concorde, a railgun, and an air-hockey table." Also, he says it will be impossible to crash, always available on demand, way less expensive than current travel options and, ideally, solar-powered.     1、一年后升级智能手机的新计划:免费购iPhone后每月只需支付$ 32.50,而目前需花费$ 200购机。(纽约时报)。 http://www.nytimes.com/2013/07/16/technology/personaltech/2-new-plans-to-upgrade-smartphones-after-a-year.html?ref=technology&_r=0   Under AT&T’s new plan, a customer buying Apple’s iPhone 5 would pay zero upfront and pay $32.50 every month for one year. After that period, the customer would have the option to trade in the device for a new one. In the past, the customer would pay $200 upfront for an iPhone 5, then have to wait two years to be able to pay $200 for a new iPhone. Upgrading to a new iPhone in less than two years would cost the full price of the phone, or about $650. In contrast, a person who chooses AT&T’s Next option would pay $390 over a year to be able to upgrade to the next iPhone, theoretically saving $260. “It makes it really easy to come in and get your new phone every year,” said Mr. de la Vega. Chetan Sharma, an independent telecom analyst who does consulting for carriers, said the new payment options would not make a big difference for the average, budget-conscious cellphone owner. T-Mobile’s Jump is aimed at gadget enthusiasts who always want the latest generation technology — a minority of customers, he said. And Sprint’s guaranteed unlimited data plan is intended for avid technology users who regularly burn through their data plans by streaming video and music from their phones.  

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