I hope they are close to deciding where the next few factories will go. They probably need to start building those as soon as Texas and Berlin begin production.
For US at least, the Texas site is real big. Like I think they could double capacity a few times. So may be a matter of scaling it up for a bit before needing to add another brand new factory.
I recently drove past the Austin construction site. It's so incredibly huge. And they keep buying the surrounding land. It's really impressive to see in person.