General Discussion
In reply to the discussion: Why do people drive SUVs? [View all]primavera
(5,191 posts)Sorry to contradict you just as you step in the door, but diverse opinions are the nature of DU, so it's sort of a fitting welcome.
Automobile emissions are not a minuscule source of pollution. After industrial pollution, vehicle emissions are the second largest contributor to poor air quality that we face in this country. Poor air quality is a leading contributor to not just global climate change, but to respiratory illness. Individually, of course, you're absolutely right - the impact of a single gas guzzler is negligible. But you put a hundred million of those vehicles on the road and it's no longer negligible. If everyone drove a SULEV or ULEV vehicle, it would indeed make a very substantial difference in air quality, especially compounded over time.