[Artighur]

I use this map ( http://shadowrun.chinagreenelvis.com/map/ ) it's pretty much the same concept but with zoom it and out and slightly bigger.

[Denver Doc]

Maybe none of the gangers have the skill to steal a car and they could start out in a "civilized" part of town having to deal with the wanna be corp brat gangs first, maybe "the orphans".  If you don't have the right skills you don't want to steal cars in the wrong part of town or else its nothing but worrying about getting wracked by the cops.  Love the idea.  Great movie.