I think that down the road, buildings and condominiums will be built enough that they'd be practically like "little cities." Even now, I see condos being built in my area with their own malls at the bottom floors. My friend lives in one of these. She lives on the 21st floor, works on the 5th floor, and buys everything she needs from the grocery on the ground floor. Not sure how I feel about the 'beehive' skyscraper in the middle of the water though.