Railway Board Chairman Ashwani Lohani on Monday flagged off India’s first engine-less semi-high-speed train - "Train 18" in Chennai. The Rs 100-crore indigenously developed high-tech, energy-efficient, self-propelled or engine-less train will eventually replace the Shatabdi Express for inter-city travel. Officials said India's first trainset -- Train 18 -- will be a game-changer for the Indian Railways.