Inspirational: Ron Herron's walking city concept, 1964

[tnjrp]

Might be fun to do something like this -- maybe not treat it as a whole city but perhaps a city block or something @ Hannu Rajaniemi's Martian city of Oubliette (which was made of constantly recombining subelements):
http://archigram.westminster.ac.uk/project.php?id=60

The original's actually been done already in miniature but not as a commercial project AFAIK:
http://www.joerobson.co.uk/history_02.html

[Mister Rab]

Oh, I love the Mortal Engines series. Apart from being rollicking reads, they are an absolute goldmine of steampunk/pulp/VSF/sci-fi/post-apocalyptic ideas. I enjoyed the misremembered history (like Chas Darwin) as well.

Your local library is bound to have them.

[Tom Reed]

I saw a 6mm walking city for an alien race of centaurs, for a miniatures game, but I can't remember what game it was for.

[starkadder]

Christopher Priest wrote something like this in 1974, It was called Inverted World and the city ran on rails.
Great book from memory.

http://en.wikipedia.org/wiki/Inverted_World