ロールス・ロイス、 人を乗せずに貨物だけを目的地まで運ぶ無人貨物船の開発に着手 http://www.bloomberg.com/news/2014-02-25/rolls-royce-drone-ships-challenge-375-billion-industry-freight.html …
11:41 PM - 26 Feb 2014
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