Carfree movement communities

There are already a certain number of communities working for carfree cities.

Here are a few I found. Could you post in the comments below more information on other *active* communities? thanks.

1- ,
there are more discussion groups at yahoo on the same topic. Just search.
Which ones are in your opinion the most active and interesting?

2- , not specific to any area.

3- I saw a few others, but I have to dig back up the links... I'll update here as I find them.