EurActiv: Four international agencies, including the UN and IEA, have teamed up to promote the development of a global car fleet that runs on 50% less fuel by 2050, stabilising greenhouse gas emissions worldwide in the process. Background: In December 2007, the European Commission proposed binding legislation to push vehicle manufacturers to cut the average emissions of new cars by 18% – from current levels of around 160 grammes of CO2 per kilometre to 130g/km by 2012 – by improving …