More job options is a critical one. There have been periods where my husband's job asnd mine were 40 miles apart. Unless you're willing to bike 20 miles to work (and I'm not, not in Phoenix temperatures) there is simply no possible way to choose a place to live that would enable us not to drive. We did live close enough to my husband's work for a bike to be practical - but again, for much of the year it would have been simply too hot, 100-115 degrees coming home, and he also had to drive to business lunches, offsite meetings, etc. In the job locations where I could have taken a bus, it would have added significantly to a commute that already cut too much into my day. I simply couldn't afford it in terms of time.

If I had been allowed to work from home a few days a week - and some of my jobs would have been as productive or more that way - then I could have driven a lot less. My managers did not allow that option, despite working in a city with an inversion layer, for a big company in a city that was under an onus to reduce emissions. Believe me, I asked - it would have given me a lot of time back.