As more vehicles turn to CNG, the number of filling stations is proving to be inadequate Spiralling prices of crude oil are ringing alarm bells for the green fuel policy in the Capital. As more and more private vehicle owners switch to CNG and the government makes CNG mandatory for different categories of vehicles, the city is falling way short of the demand. Long queues at CNG filling stations mean one thing: the city needs an immediate augmentation of capacity. And it needs it fast. Indraprastha Gas Limited (IGL), the sole supplier of the fuel in the city, blamed the crisis on an unprecedented growth in the number of CNG users. IGL officials said rising prices of petrol and diesel were responsible for this