I might pull the car over because the driver is black.
That sounds extremely dangerous, why is it a problem that the driver is black?
Black people love to speed. I am worried she might start speeding again.
Everyone speeds from time to time. It is only okay to pull someone over if there are safety concerns! There is no reason to pull someone over for the color of their skin.
I don't think she's a good driver, I've never seen a good Black driver. I need to tell her to let me drive instead.
If there really is a safety issue, then pull them over, but if it is harassing them for any reason, leave them alone.