The book features great examples of criticism regarding city planning. It takes city planning further to luxury planet building or even designing continents!
For example, the Planet Magrathea becomes the richest planet of all-time because they specialised in the industry of custom-made luxury planet building. Their engineers (sadly not city planners) build dream planets for extremely rich and successful people however they want them; gold planets, pink seas or even soft rubber planets with lots of earthquakes etc. But this leads to an economic breakdown of the galaxy.
In an other example, a character says ‘I design coastlines, I got an award for Norway!’ The character even wants to use his favourite fjords to design a new continent of AFRICA but gets rejected by authorities!
The author’s ideas for planning are highly creative and full of irony as you can see.
THE HITCHHIKER'S GUIDE TO THE GALAXY 