That $%$# mountain goat

NYT has an interesting article on mapping and in particular how navigation systems deal with problematic street topology and naming. It is a topic even more apropos here because of the screwey road system here. I am curious, I may need to pop a note to Bob Regan (Pittsburgh's own Phyllis Pearsall) on this.. but will mapquest, or other direction finding software, try to drive you down a street that is nothing more than steps? Kind of funny to think about some out-of-towner faced with that.