hybrid cars - how did larry david get so eco friendly? Why does he have a prius?

I was watching the larry david show, not understanding why he was driving around in a toyota prius on the show. How did larry david get so eco friendly, and why was he into hybrid cars?

Then I happened to find a video for a TV show ceremony for cleaning up the environment, and where larry david came on and explained everything about why he is all of the sudden so eco-friendly, and why he drives a toyota prius. I hope this answers all the questions.