Remember that 80s song by Berlin, “Riding on the Metro?” Well, the metro in Sao Paulo is something else. Rush hour is absolutely insane! People flock into the underground world like cattle. The escalators are full and the maze of tunnels are full of people. If you don’t go with the flow, you are bound to get trampled. After a being here for nearly a week, I am finally comfortable to attempt the plunge on my own.