my home/room is now collapsed into the searches for Detroit. I am in Dearborn Mi, this would be like collapsing Brooklyn into Manhattan.
I have no idea whether or not this is true in a sociological sense. In terms of geography, going from Park Slope in Brooklyn to the World Trade Center in Manhattan crosses a body of water and involves a tunnel. It only takes 16 minutes, however. The Google Maps trip from Dearborn to Detroit shows a time of about 20 minutes, and doesn't cross any geographical boundary.
I have no idea if people who are going to an event in Detroit might decide to stay in Dearborn.