The State Railway of Thailand operates several trains a day to the border crossing at Nong Khai, including overnight trains equipped with clean and comfortable first-class sleepers.

CNN: ASIANOW - TIME Asia | Travel Watch | Do-It-Yourself Luxury on Thailand's Railways

The inside, even in first class, was clean but not much more inspiring.

WSJ: Riding the Trans-Mongolian Railway through Russia, China and Mongolia

Brazil's first working-class president, a favorite with Brazil's poorer voters, promised clean government and a fairer distribution of wealth.

NPR: Brazil Votes in Runoff to Choose President