HONG KONG - DECEMBER 05: Unidentified people using city tram in Hong Kong on December 05, 2010. Tram in Hong Kong is the only tram system in the world that runs with double deckers.
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HONG KONG - DECEMBER 05: Unidentified people using city tram in Hong Kong on December 05, 2010. Tram in Hong Kong is the only tram system in the world that runs with double deckers.