simply the best inspiration....

extra cogent is a visual information design office... i stumbled upon this when searching for maps of the pittsburgh T system.... its amazing and i believe it will become a framework on which i can expand upon within the conditions of the northern suburbs.

Scroll down to the section:

Pittsburgh Metro Map

Here's the deal, Pittsburgh doesn't really have a comprehensive subway system. This is a completely fictional piece of work using real townships in Pittburgh. It's a concept piece for the Pittsburgh 2050 project.

http://www.extracogent.com/