A pioneering program by one of the world's largest cities to switch its vehicle fleet to clean fuel has not significantly improved harmful vehicle emissions in more than 5,000 vehicles
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/impact-wrong-use-clean-fuel
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rickshaws
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/automobiles
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cng
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/spm
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-efficiency
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport