Though those are not usually pickups. More Range Rovers and similar. The Thais like their pickups though. Locally made Hiluxs are #1

They're very popular in the countryside. Pick-ups from Ford, Mazda, Isuzu are also locally made in Thailand.

They're used a lot as utility and work vehicles. Road conditions can be pretty bad especially during the rainy season.

In Bangkok small cars are more popular.