Even if I've already replied some posts, I'd like first of all to express you my complete admiration by your very first decision about leaving your "typical" job and going beyond. It's kind of refreshing to hear this stuff from north-american people, which is hard to admit, are too absorbed by car culture.
I'm writing you from Spain (that's why my english is so awful) and I'm very frustrated and a little bit upset after my recent trip to the USA. I've made a long trip from Chicago to L.A. (yeah, I put my kicks on route 66), and that was the kind of trip I wanted to do to know more about american cities. I've seen, as you may know, severeal cities which includes from the "great architectonical city of Chicago", until the smallest town of Texas (I'd really loved the route down there), and I have to say that something has impressed to me, even if I knew it in advance: the massive use of the car.
I know fuel is cheaper than anywhere else. I know houses are far away from jobs places, but for god sake, each and everyone of the cities I've visited are completely flat!. What about bike? a bike in a flat city is the best choice!, what about public transportation?. What about people in the street?. The first person we met in a zebra crossing after Chicago, was in Miami (Missouri) after 4 days!!. That explain a little bit what I'm talking about. Most of people in the cities I've visited, don't know what a sidewalk is..and that's so sad.
So that's why I really love what you and your fellows are doing (or trying to do) in Dallas (I'd really love to know more about it), because man, you're kind of visionary in your homeland. Keep fighting and keep us informed.