I think Sue's planner migrated from the Norfolk, VA area. there's about 37 rivers (maybe I exaggerate, maybe I don't) that converge here, so peninsulas and bridges and tunnels to connect it all. The freeways are loosely based on a circle... 64, 164, 264, 464, 564, 664. I'm just now making sense of it after 3 months. I haven't found a map yet worth buying yet. It's annoying.

That being said, I'm pretty handy with landmark-driving too, but I tend to have big name roads in my head.

Back home in OC, CA, I could get you to nearly anyplace without a map, courtesy of driving an ambulance for 4 years. Of course, my landmarks were hospitals, nursing homes, etc...