I found these photos on the web. They have been around a few years with no details about the location. It does look like it’s in the vicinity though, maybe Thailand.
On pigs being transported to market by moto:
Sometimes they’re fed large amounts of marijuana to knock them out and they sleep passively all the way. Pigs in space.
Another dastardly trick is to make the animal drink large volumes of water. This temporarily bloats their weight for sale time.