Interesting piece Sarah. I wonder if there are any unseen factors that play into the stats. For example, is the decline of car-free households in non-urbanized areas and states due to the increasing inability among certain population segments to afford a car? Is there an ‘evolution’ factor involved that might explain why some urbanized areas are seeing a decrease in car-free households — think previously car-free millenial households discovering that they need a car after all after they move into a city.
Might also be interesting to see if there’s any correlation with a change in local availability in mass transit options. Do car-free households change when a municipality or state increases or decreases their investment in rail, buses, etc.?