An unmanned sweeper works in Binhu National Forest Park in Hefei, east China's Anhui Province, Oct. 11, 2022. A project promoting self-driving vehicles has been implemented in the Binhu National Forest Park of Hefei recently. Self-driving tour bus, unmanned vending vehicle, unmanned sweeper and other vehicles have been put into use to serve tourists. [Photo by Guo Chen/Xinhua]
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