I had a hard time driving as well. I used to take the bus because it got bad. What helped me was therapy. My tips are put on some soft music, get something to fiddle with your fingers, get a bottle of cold water and put it on your neck and take deep breaths. I still struggle sometimes.

Cold water or blast the AC; Suck on candy like Halls for Grounding; Play music and sing; Tint your car; Therapy (if u want)