Ill try to be nicer this time, ok.

Heres a simple currency destroying plan for Schenectady, NY, a small city of about 80,000. This also applies to the surrounding areas, Niskayuna, Rotterdam, Scotia, and Glenville. For this example i will say that these outlying towns are working together with the city. Two basic needs of the residents are food and clothing. Glenville and Rotterdam contain large rural areas of farmland. They supply the city with food. Clothing can be made in the city in one of the numerous factory buildings. The city could also make something else the world needs (other than plastic consumer goods). Larger cities are on national agreements to supply what cant be made locally, etc cars (if they;re still being used), medical supplies. They supply these things to the smaller cities in exchange for food, which they cant get enough of themselves because of the extreme densities. They can also supply fossil fuels if they have to. ELectronics can be traded for with China on a national basis.
Meanwhile, remains of the torn down stores and strip malls can be reconstituted to create high strength materials to build new buildings which can gradually replace the old ones.