The Obvious Logic of Mass Transit and Bike Transit
This poster from the city of Muenster, Germany provides as compelling an argument as I've seen for mass transit and bicycle transit. Our vehicle dependent culture requires easy energy to manufacture and drive them and easy square footage to stow them away while we're not using them. As energy and space are less and less easy to come by we'll figure out in practice what is so obviously pictured above. h/t Richard Florida.