A city will only grow as big as it takes a citizen to travel from one end of the city to the other in about an hour or so. If forced to make a suggestion, I wou

A city will only grow as big as it takes a citizen to travel from one end of the city to the other in about an hour or so. If forced to make a suggestion, I would say create a superb transportation service so people could traverse the city quickly and thereby could afford houses and apartments in outlying areas.