New Delhi, Dec 27 (ANI): After CNG prices in Delhi raised up by Rs.4.50, Taxi & Auto Union General Secretary Rajendra Soni gave an alternative of 7 days to Delhi’s to-be CM Arvind Kejriwal to either roll back the CNG prices or revise the auto fares. He said that if the demands are not fulfilled, the autos would resist to ply on Delhi roads thereafter.