By Brad Lendon and Kocha Olarn, CNN; June 3, 2018
Bangkok, Thailand (CNN) — The contrast is stark. You’re riding the sleek, elevated rail line into central Bangkok from the city’s main international Suvarnabhumi Airport. Just a few stops from the city’s center, you see old rail stock — engines and cars — scattered through what looks almost like an urban jungle.

As you get closer to the city center, the jungle gives way to old warehouse structures, with Bangkok’s skyline gleaming close by.