Government says there is no proposal for introducing dual pricing for diesel in the country, which would have made running of diesel cars costlier. Finance Minister Pranab Mukherjee said this while addressing a CII function in New Delhi. He said there is also no proposal to raise duties to make up any shortfall in tax revenues. The clarification comes two days after Mr. Mukherjee's statement in the Lok Sabha had created the impression that driving diesel cars could become costlier. Allaying the apprehensions of the corporate sector that economic reforms have come to a halt, Mr. Mukherjee said that the process of economic reforms in the country is irreversible. He said they have no reason to fear introduction of any regressive policy measures. Mr. Mukherjee asserted that India's growth story is intact and the country will achieve appreciable economic expansion despite negative sentiments across the world. He said Indian markets have the capacity to withstand the negative sentiments affecting the external world. On the downgrading of US credit rating by Standard and Poor's, he said it has an adverse impact but there is no need to press panic button. Mr. Mukherjee, however expressed concern over high inflation and said that it is a major challenge for the country to in the short term which has implications on our growth momentum. He said India is the second fastest growing economy in the world and is expected to be among the top three economies in the next two decades.