"I am transport minister, I am going to issue an order to the industry, that only petrol engines will not be there, there will be flex-fuel engines, where there will be choice for the people that they can use 100 per cent crude oil or 100 per ethanol," he said. "I am going to take a decision within 8-10 days and we will make it (flex-fuel engine) mandatory for the automobile industry," he further said.