Speaking at the 14th annual convocation of Visvesvaraya Technological University, he said, "We are on the threshold of expanding of our economy and business with India should grow to the tune of 20 trillion USD in next 20 years to become the largest economic growth country."
The railway minister also hit out at the opposition and said it was not enough just to criticise without joining hands for economic development of the country.
United States has one type of economic model while China has another. Japan and Israel with meagre resources have migrated from manufacturing to innovative society growing with a different model, he said.