A while back New American Dream had a contest: come up with a short, punchy slogan to encourage American automakers to make more hybrids. Apparently they got nearly 35,000 submissions and they’ve narrowed it down to 100 (that’s some serious intern grunt work!). If you sign up for an account over there, you can vote on your favorite.
(Reading these over, I’m wondering how bad the other 34,900 were. Some are okay, but “Do it right! Go Hybrid!”? Me, I’m voting for the current favorite: “Green cars today. Blue skies tomorrow.”)