Police, especially in small towns, are notorious for targeting out of towners (the way a racist cop might target a race they don’t like).
Here you have to understand the training/experience of highway patrol. Here we have a rental and it was traveling below the speed limit...a highway cop might immediately think drug trafficking (again not knowing the race, something you probably never thought without the training and experience), And being under the speed limit gives him the right to make the stop (but what he really wants to do is check up on his suspicion). This would explain the questions about the job and where the driver was going to/coming from.
Maybe I missed something but there are hundreds of thousands of stops everyday, many like this one are ridiculous...I’m not sure how much attention this really deserves nor if the officer (who shouldn’t have made the stop to begin with) deserves to be labeled a racist (especially because now a days that is tantamount to being fired and losing your livelihood as well as all the targeting him and his family would endure).
Maybe a potential policing solution would be something akin to jury duty where citizens are selected to shadow officers on every shift, maybe require a mismatch Of the officer/citizen pairing Based on race/sex.