As early proof, this March GM’s new EN-V concept cars—electric two-passenger urban transportation pods—will drive around a GM exhibit in Shanghai in a choreographed display of wireless automation.
Overall, the six cities revealed great differences in the history of subway construction, the length of subway lines and the yearly passengertransportation capability.
总之，6个城市在地铁的建设历史、地铁长度和年运送旅客能力方面皆呈现出了很大的不同。
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How to satisfy the increasing demand of the existing passengertransportation and optimizing the city's space construction are the problems for paying attention to by the big city.