What’s The Most Successful ‘Green’ Car Initiative Of All Time?

In spite of all of the mismanaged regulations and doomed projects associated with ‘green' car tech, we actually have much less pollution coming out of our cars than ever before. What has been the best initiative to clean up cars we've ever seen?

There have been many advances in mechanical and digital automotive technology to reduce tailpipe emissions, but we should not count out the changes to our whole transportation infrastructure. Mixed-use developments make it possible for people to go to work, get food, and go see a movie without having to repark three different times.

What development do you think has been most successful in making our world less smogged-up by cars?

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