In any real city, you walk, you know?

I watched the movie Crash the other night. The opening remarks set the stage:

Graham: It's the sense of touch. In any real city, you walk, you know? You brush past people, people bump into you. In L.A., nobody touches you. We're always behind this metal and glass. I think we miss that touch so much, that we crash into each other, just so we can feel something.