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Elders ride bicycles as they participate in a campaign to promote the idea of the Car-Free Day in Hohhot, capital of north China's Inner Mongolia Autonomous Region, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Li Xin/Xinhua]
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![Elders ride bicycles as they participate in a campaign to promote the idea of the Car-Free Day in Hohhot, capital of north China's Inner Mongolia Autonomous Region, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Li Xin/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090923/000cf1a48b7f0c23b6f701.jpg "Elders ride bicycles as they participate in a campaign to promote the idea of the Car-Free Day in Hohhot, capital of north China's Inner Mongolia Autonomous Region, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Li Xin/Xinhua]")
