Well, this is awesome to see!
I didn't expect anymore blog posts this year, but SCS is the master of surprises. We know Denton will be in Texas eventually, but I think it would be very cool if they added the testing facility in Washington. They actually have room to do it. It would be at the Burlington exit on the way to Coupeville (and the ferry).
You are right, it is possible for them to add the test facility of Mount Vernon,WA if they have permission. With how they places Bellingham and how they placed Coupeville, they could actually make it work. It would be more or less a fun area with no real missions to it.... though hear me out. Remember how they wanted to have a 'trucking' school in the game someday i the future? A place to teach proper parking and various things? What if they made this test facility the place to actually do that? That would be cool and give it purpose.

They are adding the Peterbilt manufacturing facility in the game, which will be in Denton, TX. Image of it is below.
