replace half the width of all the overly wide suburban streets with community gardens. Now that gas is so high (and staying higher), those who can remain in the burbs will need to be more or less self-reliant.
Changing our lifestyle is not going to be popular in many circles, but it's likely that things will be different in the future. No matter what the deniers say. If we come up with a car that has twice mpg but gas costs twice what it did, there's no saving - just more work to keep up, and not everyone can do that.