ut is it possible they could do 3 states in a year? States that aren't as geographically diverse? Wyoming is a start.
It could be very possible based on the speed they have been shown to make things, especially when you have states like Oklahoma, South Dakota, North Dakota, Iowa, Kansas, etc.
That said, I wouldn't expect it though.
Eventually we will also have tiny states on the east coast (they could also do many states in a year this way too). That will be interesting as to how they shrink things down. It will probably seem more like an ETS2 map with more highways and only major cities with very little in-between. We've been lucky with the larger western states.