Well, although quite interesting, it isn't the only project using math to save artists some time by generating entire cities from scracth. Even Nvidia has its own precedural city, using OpenGL and PhysX
In this case, they're not only generating the buildings, but everything inside as well: stores, rooms, stairs, furniture... and you can even interact with it, and destroy everything.
But, if you think these tools can only be used to create "square" modern-looking cities, just have a look at what Procedural is doing; perfectly recreating a mediterranean-looking city.
(You can even use a street and height map as basis for the generated city.)
And another example comes from Introversion:
via [Digital Motion]
