有人关注Elon Musk的“Hyperloop”吗？号称是“除了汽车、火车、飞机、船之外的第五种交通方式”。

The Tesla Motors co-founder called the fast train "a cross between a Concorde and a railgun and an air hockey table" at the D11 Conference earlier this year. The pneumatic tube train system will be "twice as fast as what an average aircraft can do."
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Passengers will ride in capsules within the tube similar to pneumatic tubes at bank drive-throughs.

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我还以为是空间曲率引擎做出来了。。。