Here’s an article in Washingtonian about new transportation sharing apps and delivery services, and how they are changing the demand for car-dependent neighborhood design in Washington D.C. It’s a feedback loop that just continues to pick up steam once it starts. And this is before computer-controlled vehicles really come into their own, which is going to change everything.

That process works like this: First, it gets easier not to have a car. In recent years, things such as improved public transit and 69 miles of new bike lanes in the District alone have made Washington an easier place to navigate without driving.

Next, new digital businesses—Uber, Instacart, Car2Go—capitalize on this market. (Google has even made noise with a far-fetched idea to roll out a ride service featuring driverless cars.) One of the things these services collectively do is make up for some of the things you lose—say, access to a wonderfully big, suburban-style grocery store—by not driving.

Then the rate of car ownership tumbles: For the 18-to-34 demographic across the region, the share of people who drove to work fell by 7 percentage points between 2000 and 2013, according to the US Census. The District alone gained 12,612 car-free households between 2010 and 2012.

Finally, as a result, lawmakers and regulators have no choice but to catch up—which means even more bike lanes, liberalized transit rules, and denser neighborhoods whose residents make appealing customer bases for bike sharing, and cars by the hour, and novel delivery options for economy-size packs of toilet paper. It’s a cycle that reinforces itself.