Naaa I'm not with the technology in cars theses days the Co2 emission is nothing compared to before. Theres other things which produce more pollution than cars, it's just a theory and a money grabbing idea because nearly everyone has and everyone relies on them so what is the best way to get money off people..Up the price of petrol and other silly payments your charged for driving Oh and my parents drive a 1.3 Daihatsu Charade and a 1.8T Audi A6 and they hardly kill the earth