Solar car Naledi of South Africa's North-West University dashes from the starting line during the 2017 World Solar Challenge in Darwin, Australia, on Oct. 8, 2017. (Xinhua/Xu Haijing)
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Solar car Naledi of South Africa's North-West University dashes from the starting line during the 2017 World Solar Challenge in Darwin, Australia, on Oct. 8, 2017. (Xinhua/Xu Haijing)
