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An unmanned express delivery vehicle runs to a Cainiao Network Station in Xiongan New Area, North China's Hebei province on March 31, 2019. The unmanned express delivery vehicle, independently researched and developed by Cainiao Network, Alibaba's logistics arm, was recently put into service at Xiongan citizen service center. The new energy vehicle can convey about 200 small packages at one time from delivery station to intelligent cabinet. [Photo/Xinhua]

And with Syntak technology, the engine compartment has improved sound insulation. And a new interior acoustic concept includes sound absorbers integrated into the headliner.

Analysts said Technologies like big data and artificial intelligence should underpin the development of instant delivery; meanwhile, government should improve laws and regulations to bring more order into the industry.

And then there’s another chilling factor that doesn’t get talked about as much: Lawsuits.

Analysis showed that exposure to higher levels of PM2.5 led to significant increases in cortisol, cortisone, epinephrine and norepinephrine. Between-treatment differences were also observed for glucose, amino acids, fatty acids and lipids.