Last I heard those 30K stores where testing would pop up all over the US resulted in exactly 5 test centers, none open to the public -- just for health care personnel and first responders. I presume part of it was poor follow-up and organization by the Trumpeters. But also these stores realizing that it's bad for business to have sick people and health care workers in hazmat gear hanging around in front of their stores. Apparently there are a few more now(?)
Really just more Trump showmanship, more GOP reliance on private business to do gov't work (previously a W Bush specialty), and some good PR for a few chain stores without having to do much at all. Win-win-lose. (Trump-Companies-American People).