“IGL is planning to spread the use of CNG across India. Automobile manufacturers like GM, Hyundai, Tata and Suzuki are introducing NGV variants and more automakers will introduce them soon,” said Vedvyas, who also added that the Petroleum and Natural Gas Regulatory Board (PNGRB) is targeting 200 cities to implement CNG distribution network projects by 2015.

Furthermore, the use of natural gas is mandatory for public transportation in several Indian cities. For example, every state-run bus in Delhi operates on the gaseous fuel and the city’s mass transit operator owns the world’s largest CNG-powered bus fleet, informed Times of India.

In addition, Delhi has more natural gas vehicles and CNG stations than any other city in India and, according to IGL, out of the country’s 527 refueling sites in 2009-10, Delhi had 188.