The industry is committed to contributing to an integrated approach, with other stakeholders,to a cleaner environment and reduced carbon emissions. Automakers are constantly developing more efficient engines and drive-trains to reduce fuel consumption, and a wide range of sophisticated emissions-control technology is putting cleaner automobiles on the road everywhere. With more and more new vehicles with modern exhaust emissions performance on the road, clear improvements in air quality can be seen. This trend will continue, even without further improvements to new vehicles, as older, more polluting cars are replaced with new ones.