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utopian cities, Tag
- Futuristic Walking Metropolis Could Roam Around the World Planting Forests in its Wake Wed, 27 Nov 13, 7:00amThe 560-meter-long structure rests on giant caterpillar tracks which enable it to move from one location to another. A total of 36 crawlers propelled by engines similar to those used in large sea vessels enable it to move....