Bharat Heavy Electricals Limited, Bhopal unit would be manufacturing sky buses that would be introduced in 14 metros along with Mumbai. The buses to be used in electric trolleys are being imported
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/bhel-sky-buses-be-introduced-14-metros
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/central-chronicle-bhopal
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport