cool
procedural is the best way for stuff like this 
one thing I’d recommend as you’re developing this is to drop the voronoi - it’s tempting to use it because it makes randomish shapes but it’s very quickly identifiable…and as you make road intersections you’ll be dealing with weird angles etc
I’d start with just a grid plan and work out the major features - it’s simple and in the end you’ll get a system that produces a usable set of assets, then move on to other shapes… voronoi, user defined etc