Peak Parking

Autonomous cars could hasten the parking spot's decline:

[R]ight now depending on how you count we have somewhere between three and eight parking spaces per car. If the cars don't need to sit idly waiting for you until you want to leave (imagine a world of cheap, ubiquitous taxis) that number is going to become totally ridiculous. After exploding for about 60 years, the torrent of parking construction is going to halt very suddenly and then start shifting into reverse.