In this Making of I want to show you, what type of technique I've used in my latest picture: Urban.... which is created in 3ds max.

My computer at home is not really strong, it was necessary to save the resources I had to make lowpoly objects, and smaller resolution textures. I run out of resources at the end of the project, so that's why you can't find a lot of rubbish on the street, objects and textures, what I want at the start of the project. I deleted a lot of objects and other things not to run out of RAM.

LINK:
http://www.cgarena.com/freestuff/tutorials/max/urban/index.html