This is a real shame. Have been through the airport there and it couldn’t have been more user-friendly for travelers. I loved it and it made an excellent impression for Detroit. Would go there (airport) again in a heartbeat...
This is because the airport is not in Detroit. It's in Romulus, which is well outside of the city.
Does Detroit have a new airport? I flew through that airport a few years ago and thought I was in the old Soviet Union, the place was so dirty and decrepit. Shortly after that, the Wall Street Journal rated the Detroit airport the worst in the nation.