I know public transportation exists in other countries — and in many places, better systems than we have in America. This isn’t about those countries. This is about where we’re going to be living.USAID posts are, for the most part, in developing countries. Put another way, all our posts are “hardship posts” to some degree.I know in some cities public transportation is OK to use, but in many others — including San Salvador — it is discouraged if not forbidden by the powers that be.So back to my point: We love public transportation. Particularly when traveling and visiting new cities. Even Metro, for all its faults, has a special place in my heart. (I will try to remember this over the next couple months during every offloaded train, #hotcar, train malfunction, switch malfunction, weekend track work project, tourist-standing-on-the-left-side-of-the-escalator incident and other joys of riding Metro.)We’ve ridden the subway in New York; the L and CTA bus in Chicago; the T in Boston; BART and Muni (metro, streetcar and bus) in San Francisco; and the light rail, streetcar and bus in Portland, Oregon. Los Angeles even has a Metro system (who knew?), which I discovered and used on my first trip to L.A. last fall (sans Kail).We have a collection of single-ride tickets, day passes and even reloadable cards that “locals” use. I keep these things in an aptly named “keepsake box” in the event that one day I become crafty and start scrapbooking.We use mass transit not out of our desire to protect the environment, but because it’s cheap and a great way to see a new city. Other than running a marathon, there’s no better way to see a city than “learning” its public transportation system, mapping out a route to get from point A to point B, getting lost, walking around, getting lost, finding point B, mapping out a way to get from point B to point C, NOT getting lost, getting to point C, walking around, getting lost again, mapping out a way to get from point F to your hotel (after scrapping points D and E for the day given your terrible sense of direction), making it to your hotel without getting lost (from point F, that is) and feeling quite accomplished for the day. Thank God for smartphones and Google Maps/GPS. Seriously.Also, I hate driving (in traffic) and may or may not have road rage. I realize this is going to be a problem.Do you commute using public transportation or do you prefer the peace and quiet of your own car? What about when traveling in other cities: Subway? Cab? Double-decker tour bus (not gonna lie — am considering going on one before we leave DC)?