While self driving cars will do great things for people such as yourself (and overall I fully support their development/adoption), I also share the fear that it will prevent American urban centers from a desperately needed shift away from cars dependence in favor of better public transit and urban density. I really don't see the idea of every person in the country having their own personal transportation device (or even shared self-drivings car with something like uber) as a sustainable path for the US to continue down.

The technology for good transportation in/among major cities already exists: walking, biking, mass-transit, and high-speed rail. I wish Americans would be more open to these concepts rather than dismissing them in favor of the form of transit that has yielded nothing but horribly designed and polluted cities.