My head is very sensitive to quick movement but it does not stop me. I have just developed a slower movement pattern. I also have found I do better turning my shoulders as I turn my head. I learned this walking the back yard looking for dog 'deposits.'

If you can tolerate TSA, airport commotion and being in a confined cabin for 2 hours, I'd suggest you fly. I need to sit at the front row with a bulkhead in front of me. I need the visual space otherwise, my claustrophobia is a problem. I use the AACA (Access to Air Carriers Act) to get the seat I need. Once I reserve online, I have to call in and request the seat I need. I tell them I have a visual processing disability that makes it difficult to have a seat back 12 inches from my face. I have to be sure to say I have no problem being in an exit row.

The fatigue from a 20 hour drive would likely make you visit difficult.