Compressed Natural Gas (CNG) can be used as a substitute for petrol or diesel fuel and is seen as a environmentally clean alternative to fossil fuels. CNG powered vehicles are more fuel efficient, emit fewer toxic chemicals and operate more quietly than conventional cars.
Made by compressing purified natural gas, CNG (not to be confused with LNG - Liquefied Natural Gas) is one of the major fuel sources for cars in Pakistan, Bangladesh, India, Argentina and Brazil. Many petrol and diesel engines can be converted to run on CNG.