On Sunday nights, they roar relentlessly in a circle down Dong Khai boulevard, then spin to either side of the Dai Lo Le Loi.

CNN: Stops and Starts

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