Variations of the idea have been used elsewhere - the human-powered car, generator and other fun applications but the Chinese have taken it a step further. They have combined innovation with community development which is something every over-populated developing country can learn from.
This news story about a human-powered future cites some criticism of the commercial viability of such power :
"It's a very good marketing tool for businesses, but in terms of economics it does not make sense at all."
The main reason it was being used was because companies wanted to "look green, taste green and smell green", he said.
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