I wrote a novel, in Italian, years ago. Although the novel was almost completed in year 2002, I published it only in 2006. Title: Nonovvio.
Also available as an e-book on Amazon Kindle. You can also download the PDF for free.
In that novel, I talk about a “City-State” called Solaria, built in northern Australia.
Interestingly, the idea of “charter cities” seems not to be too stupid, after all.
Paul Romer, a brilliant Stanford Economist, has some ideas about them. See his TED talk below:
Also, Tim Harford blogs about it.