No, he won't recognize them. As he is running the plates and driver's license through the official public computer system, he will also be whipping out his personal phone to run that name through a few private databases, run by ex-cops, with subscription access granted only to cops and ex-cops.

Those databases will tell him, essentially, "This guy created a popular app that puts your job under a microscope. Also, he probably got a bunch of money for it, and may be carrying a lot of cash."

It won't actually say anything about harassing him. That will be entirely up to the investigating officer, and all the other investigating officers that he may have alerted via the aforementioned databases to watch out for cars with the same model and color.