alt Hacker NewsYou don't even need to reinvent a walkable city, just look at any medieval historical town that is say ~500 years old, almost untouched, and has restricted traffic today (possibly with no public transport whatsoever). These towns are a pure joy to live in, they are walkable with no other options, quiet, pleasant and overall healthy to live in in all respects.
We keep rediscovering that we're happier and more fulfilled when we live in ways that are more like how we've been living for most of the last million years. Also we are disgusted by our ancestors and look down upon them.