When self-driving cars finally become a reality (working reliably on any condition without constant supervision), I suspect many people would skip buying house and buy these cars instead because it'll be so much cheaper. After work, you hop into your car and take a nap, then wake up in a diner's parking lot. Go back to the car again after eating to sleep, and wake up in the morning already in your office's parking lot. Basically homeless but never need to worry about cop because the car constantly moves while you're sleeping, making circuit around the city until it finally take you back to your office's parking lot.