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And SpaceX, which is competing against Amazon’s Project Kuiper satellite program, has had at least three spats with Bezos’ Blue Origin space venture. One involved a launchpad lease with NASA; another was over a patent for a water-based recovery pad for rockets; and a third was a Twitter dust-up over the landings of rockets by the two space rivals.

And he also wondered why people are often roused to help others only in the wake of a disaster.

And there’s yet another twist: That other retailing giant, Walmart, has its own plans for airship warehouses.

Analysts say their arrivals will lure some potential customers away from startups including Tesla because the majority of Chinese customers are more inclined to choose long-established brands.

An upgraded system will be put into use at an airport in Changsha, capital of Central China's Hunan province, in May, and then at Yulin Airport in Northwest China's Shaanxi province in June, before being promoted for use nationwide.