Sococo has a similar idea. I've tried it in a few places and for some reason it never really sticks. Maybe we're doing it wrong.

I understand the map is supposed to be NYC. I would use something more people friendly (you don't need car-centric roads when there are no cars!) with more greenery. Right now the map feels a bit odd to me, a bit like a post-apocalyptic world. Maybe that's appropriate for the current time.