At a recent meeting of city administrators with representatives from the state and central governments, it was also proposed that all school buses in the city should switch over to CNG.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/fighting-pollution-pune-authorities-propose-cng-pmpml-bus-fleet
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-pune
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pune-t
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cng
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cars
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control