We had roads underground, like subways but for cars.
The cars and their CO2 emissions would get trapped in"the roof" of underground roads and filtered towards patios/green areas to feed trees and plants on the surface.
In that way, CO2 emissions gets recycled, and it justifies having large green areas in highly condensed areas and cities.
The cars and their CO2 emissions would get trapped in"the roof" of underground roads and filtered towards patios/green areas to feed trees and plants on the surface.
In that way, CO2 emissions gets recycled, and it justifies having large green areas in highly condensed areas and cities.