Well storage space would first and foremost decline substantially as cars spend a huge amount of time on the road. So instead of sitting in a parking spot 23 ho

Well storage space would first and foremost decline substantially as cars spend a huge amount of time on the road. So instead of sitting in a parking spot 23 hours a day, it would sit there maybe 6-8 hours a day (at night) So where does it stay during those 6-8 hours? Well why not out in the streets in residential areas where it's as close as possible to people who would likely be commuting early in the morning. The streets would be fairly empty and it wouldn't be an issue because self driving cars would easily maneuver themselves. This would be a scenario where all cars are owned by some organization (e.g. uber, the government, etc.) and then rented per trip by users. The result is cost savings for everyone involved.