Fast Co Design ideates on what Detroit could do with the all this abandoned space.

Greenways could be built in their place, along with repaired connections to the urban grid (imagine something like Boston’s Emerald Necklace linking the Detroit River directly to Wayne State University). And the grand nine-lane avenues that radiate from the city center, such as Woodward, Michigan, and Gratiot, which once accommodated a variety of transportation modes but over time devolved to serve just one (the car), would become the primary structure for the new sustainable Detroit, taking lanes away from cars and giving them back to people.