Riding a bus is different from riding the subway in just one way: You can see things out of the windows. The Washington buses, anyhow, differed in very little else. You use the plastic credit-card-looking SmartCard to pay your fare, same as the subways, and you sit in seats that are surprisingly clean and comfy. My entire experience with public transportation came in New York, New York, and San José, Costa Rica, so it would have taken very little cleanness (or comfiness) to surprise me. Oh, and you pull the little rope to tell the driver to stop. Otherwise he might not let you off where you want to go. The subway just stops everywhere. My first experience with a municipal bus system this side of the RÃo Grande came early Sunday morning, when I went to the National Cathedral. No direct route existed via subway, so with a little nervousness I took a subway to the nearest stop for the bus route that would take me direct to the Cathedral’s gate. The Washington metro website has this ha