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Solar car Nuna9 from Stichting Zenith Innovation of the Netherlands gets prepared in front of the Northern Territory Parliament before the 2017 World Solar Challenge in Darwin, Australia, on Oct. 8, 2017. (Xinhua/Xu Haijing)
Solar car Nuna9 from Stichting Zenith Innovation of the Netherlands gets prepared in front of the Northern Territory Parliament before the 2017 World Solar Challenge in Darwin, Australia, on Oct. 8, 2017. (Xinhua/Xu Haijing)