Waymo started limited rides at Nashville airport on October 18. Limited means the service is not a general public airport taxi. Waymo is the name attached to it.
For a traveler who should check the app before ignoring the taxi line, the only useful question is whether the opening sentence changes what you open, buy, or tell someone before the day ends.
Skip the confident rewrite you will see elsewhere. Motives and timelines that were not in the report do not belong in this brief on Waymo Nashville airport.
I will correct this if a primary source from Waymo contradicts it. A brief on Waymo Nashville airport can be overtaken. It should not get more certain just because it was reposted.