The auto industry releases a new model of vehicle every now and then. What is not new about them is that they all pollute. The emissions that these cars and two-wheelers spew out are a serious threat to public health. And the high emission is avoidable. The Green Rating Project's environmental rating of the automobile sector is meant to spur the industry in the right direction -- forcing the auto companies to invest in cleaner technologies. If they do not, people will continue to choke on the increasing pollution load.