Vertical Urban Scrawl

I was driving back from Fort Wayne with my girlfriend last weekend when I started having all these ideas about the country side. The first one being, why don't cities build up instead of out? I mean, that's the concept of the skyscraper right? You can conserve space and valuable farmland by going vertical. I'm sure I'm not the first one to come to this conclusion, but I wanted to do a painting of a possible concept. So here it is with a couple details!