[Otto]

Tell us how the city crime problems will be solved, before people can be persuaded to move back in.

Also, as the great love affair with the car has to do with personal sense of freedom and innate desire to explore, how will free swimming fishes like me be persuaded to live in the reef?

OTOH, if we get an energy breakthrough such as low energy nuclear reactions (lenr), that changes everything since it makes energy and transportation costs vastly cheaper, simultaneously enabling off-grid life. Ditto alternate energies like natural gas and methane, of which we have a 3,000 year supply in our territorial waters.

Further, lots of people like me work electronically via the internet, so mostly don't have to be any particular place at any particular time, so why would I want to live in the urban jungle, race the rats, and/or eat the dogs?