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Solar vehicle Nuna9 from the Netherlands, champion of the Challenge Class of 2017 Bridgestone World Solar Challenge, is on display in Adelaide, Australia on Oct. 15, 2017. (Xinhua/2017 Bridgestone World Solar Challenge)
Solar vehicle Nuna9 from the Netherlands, champion of the Challenge Class of 2017 Bridgestone World Solar Challenge, is on display in Adelaide, Australia on Oct. 15, 2017. (Xinhua/2017 Bridgestone World Solar Challenge)