Four sport fans from Tianjin, China produced their own "rowing bicycle" that can reached 50km maximum speed. They spent more than two years to complete it.The bicycle made by two small front wheel and two rear-wheel components.
Initially, they got the idea from the gym on rowing machine, then they use the idea on the bicycle. Fitness is the main purpose of the bicycle, it not only can exercise the leg muscles, but also for tummy, back muscles and arms as well.
Today, four of them are actively preparing produce 100 such bicycles, to show in the September on "car-free day".
http://g4guru.com/2007/06/01/transport-vehicles-rowing-bicycles-fun/
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Published by natural beauty
on Friday, June 1, 2007
at 9:12 AM. 
