They're going to build it in Bekasi. This is one of the coastal cities which just like Jakarta are sinking faster than sea levels rise. I'm sure Vinfast will have chosen a site well above the waterline for their 200 hectare assembly plant however.
On the Brink: 3 Coastal Cities Fighting to Avoid a Sinking Fate:
https://www.structuresinsider.com/post/on-the-brink-3-coastal-cities-fighting-to-avoid-a-sinking-fate
