Might look like this:
I heard a lecture from Alain Bertaud on how networked, scheduled transportation is not a good solution for many people–even in poor parts of the world. And I can testify that auto rickshaws are often the best way to get around cities in India–they are quick, cheap, and when fueled by natural gas, environmentally not too bad (those with two stroke engines are a whole other matter).
One of the most provocative things I learned from Alain is that buses are often less fuel efficient than cars–for a bus system to work, they have to run at periods where demand is fairly low. As it happens, while sitting at dinner in downtown Los Angeles last night, we watched bus after bus on 6th Street go by nearly empty.