Why Not India's Ministry of-Finance in coming Budget "Should completely ban

SUBSIDY on DIESEL"? In India, we use such "DIESEL"~which have had greater Sulphur amount comparing to U.K or France & that's why here "DIESEL car are key air pollutant; whereas Government continuiously year after year subsidises "DIESEL" & simultaneously @ Bali or in Kyoto Protocol contiguiously promise to cut emmission rate. Isn't double standard? .Interestingly now apex court is now going to convert all "DIESEL car to CNG". Iknow; "To ban Subsidy on Diesel have a Political Ramification. " But I ask & my blogger decide "What's more easy step?". Though only for 2009 Election "It's very tough to ban Subsidy on Diesel!

The idea of subsidy's stands against a free market.
In the USA now only ultra low sulfur diesel fuel is available.
Perhaps a temporary subsidy to clean up diesel emissions until the market is completely switched over?
But no subsidy for polluting diesel industries.