Mario A. Bollini ’09 explains his group’s new 2-gear hand-powered tricycle design to a local client of The Association for the Physically Disabled of Kenya that came to test the prototype. Mario was in Nairobi, Kenya this past summer. christina kang—The Tech May. 9, 2016 Facebook Twitter Reddit Print Mario A. Bollini ’09 explains his group’s new 2-gear hand-powered tricycle design to a local client of The Association for the Physically Disabled of Kenya that came to test the prototype. Mario was in Nairobi, Kenya this past summer. christina kang—The Tech