MEXICO CITY, June 16, 2016 (Xinhua) -- Public transportation units are seen stacked during the start of the scrappage process of minibuses, in Mexico City, capital of Mexico, on June 15, 2016. According to local press, as Mexico City Mayor Miguel Angel Mancera announced last week the substitution of the minibuses for less pollutant vehicles to offer the public transportation service, the scrappage process began on Wednesday. (Xinhua/Str)
