I noticed this good tutorial on my long list of Cinema 4D bookmarks
and thought it would be quite useful.
Basically it´s an automatised 3d skyscraper and city modeler inside Cinema 4D.
It´s made with Xpresso and you can easily add more floors to your buildings
and modify building height etc. So it´s good asset to have if you want to
make a city from the scratch by using your own set of house and building models.