FSDbeta is not enabled on highways. It's not clear to me that it's even possible to be on FSD in that tunnel. Interestingly, the article is careful to say that

FSDbeta is not enabled on highways. It's not clear to me that it's even possible to be on FSD in that tunnel. Interestingly, the article is careful to say that the driver "claims" it was on FSDbeta. More to this story.