Big cars killing the planet

I remember when the tide turned on smoking. In just a few years it went from acceptable to unacceptable.
Public sentiment made a huge difference. Pretty much anybody who could quit did, even though it's terribly addicting.

If that same public sentiment started to frown on or laugh at these people who have a car that's 3 times bigger and uses 10 times more gas than the rest of us, then moved on to the 2 times bigger and 5 times then...
We'd make a huge difference.