Why is there so much emphasis on changing over from petrol/diesel driven automobiles

sourcesofenergy

#1

Why is there so much emphasis on changing over from petrol/diesel driven automobiles to CNG driven vehicles?


#2

There is so much emphasis on changing over from petrol /diesel driven automobiles to CNG driven vehicles, because of the following reasons:
(i) It does not produce smoke.
(ii) On burning CNG it produces $CO_{2}$ and water.
(iii) It does not leave inburnt hydrocarbons, lead particulates etc., which pollute the environment.