AN OTHER GOOD IDEA

A team from the Massachusetts Institute of Technology invented a wheelchair-road, transmission is made with cheap bike parts easy to find and replace, even in a remote village. The inventors have founded a start-up to produce the chair and sell,ONG buy and redistribute free.
Site information: http://gogrit.org/lfc.html

Video on the link: https://www.kickstarter.com/projects/gogrit/freedom-chair-the-adaptive-all-terrain-mobility-ma