Urbanism is an old idea with new recognition about how cities worked before the auto became the dominant planning idea for the way cities have been designed since about 1945.
Here are a few links to help us understand what this new Urbanism is and how to achieve a people and place oriented city instead of car dominated cities:
A General Theory of Urbanism
by Duany et all. PDF
Urbanism Making Places for People
An urbanism oriented presentation for Ventura County at a recent VCOG meeting by Sargent Town Planning out of LA. PDF