You can slap things down with the most obvious -- and intentional! -- connection to other things in the book, and forget about them by the time it's time to make the connection. . . . both in the first draft, and in the revision, if you don't take notes
Given how episodic this novel is already, I don't think it's wise to have a road abruplty end in the middle of nowhere and not observe, later, that yes, that location is among those that have magically vanished. Sad little plot hole to leave it out.
Helps to revise quickly.