Are you aware of any resources that talk about what the design of a "cleanroom" city might look like? I always think of a high rise surrounded by parks with a subterranean train connecting it to the rest of the surrounding society.

I like the idea of being able to be alone in nature easily but still living with modern conveniences. American cities (at least LA, SF, and Seattle) all require a car.

The worst depression of my life was living in San Francisco and never being able to be alone in nature. (I was very broke and didn't have a car.)