I chose not to replace my broken-down car when I moved to Houston for my job. I'd already picked my neighborhood for it's walkability and proximity to public transportation. Aside from trips back to Austin, a car was superfluous. That decision is now numerically quantifiable via this website. I score an 83/100. Ignoring the rampant advertising on the site that might skew the results, how 'bout you?
Also, via that site's Google map of my area, I saw something that I'm shocked I hadn't noticed before. I live fairly close to Houston's old City Tubercular Hospital. Online searches reveal no details. This bears closer examination.