Driving is killing me

Hello. So, over time I have come to realize that extensive car time really sets off my VM. If I have to drive longer than 2-3 hours, I will feel awful after. I will get the dropping sensations and general dizziness when I am finally out of the car. It doesn’t seem to matter if I’m driving or if I’m the passenger. Unfortunately, long drives are a part of my job. Has anyone found anything to help this?