To be fair, there are over 250 million registered passenger vehicles in the US[1], and it's not like all the brake dust and exhaust fumes are safely captured and thoughtfully recycled.
And the food in this railway market looks to me[2] to be entirely whole food (fresh vegetables, fish, craps, etc), so these people are probably eating better than US folk.
Not the mention that the obesity rate of in the US is about twice (33%[3]) that of Thialand (17.1%[4]).
I guess I just don't understand how US people feel they can pontificate about how "this wouldn't happen here", and yet you can't even workout basic universal healthcare and your education system a business that seems to set out to financially cripple people from the outset.
1. https://en.wikipedia.org/wiki/Passenger_vehicles_in_the_Unit...
2. https://www.youtube.com/watch?v=BHMMBhZjoKc
3. https://www.niddk.nih.gov/health-information/health-statisti...
4. https://www.ncbi.nlm.nih.gov/pubmed/22526130