That's exactly what we
should be doing.
Cycling too.
A big part of it is that many N. American cities are designed poorly. You should not have to drive 20 minutes to get to work.
When I bought my condo I specifically had proximity in mind. My house is a 10 minute walk from a major mall with all the amenities I require, including a library. My commute to work is a 20 minute bike ride.
I would love to go completely car free, as I did for seven years in my university days, but now I have a young child and its a lot more difficult. There are alot of things I could do better, and those are challenges I will continue to try to meet.