Parking is the primary reason why I'm so excited about self-driving cars. A much more efficient usage of cars and roads when you basically have an automated version of Uber's heatmaps. It would truly provide for everyone's transportation at a very personal and granular level ( the problem with public transportation being that it doesn't take you to exactly where you need to go) while freeing up all that real estate all over the place for better things. Bet you traffic congestion and per capita pollution levels get nicer too as the traffic becomes more efficient.