http://www.youtube.com/watch?v=7cpVWCBi_qE
A dual purpose bicycle is one that can be used for both transportation and power production. This modified bicycle can be used by people in low socio-economi…
http://www.youtube.com/watch?v=7cpVWCBi_qE
A dual purpose bicycle is one that can be used for both transportation and power production. This modified bicycle can be used by people in low socio-economi…