If you open a *.LEV file (Like Frisco_01.LEV) with a text editor (this will take some time). And put the letter size in size 1 points. You will be able to see the threes, streetlights, pedastrian faces (I think), and offcourse THE CAR!!! (the wheels but I'm sure there is more)
I am sure that their is a link between the letters and the the colors used in the game.
ex: A = #0000 <----I think this is white.
So, if we make a database with all the letters and their color codes, we will be abble to see the complete city!! But I'm sure that this is allot of work.
but hey! we can try? not?
(sorry for my bad english, I'm from Belgium)