Well...read this, then. Ever heard of This Big City? If you haven't, it's great, and you should definitely click here in order to start getting your fill. Traffic problems, green architecture, sustainable growth, ideas for the urban economy of the coming centuries, you'll find it all here.
You can also follow them on Twitter (@thisbigcity) if you feel so inclined. Now if you'll excuse me, I need to go read about how Lagos is tackling bus pollution and congestion.