I'm surprised you aren't restricted from driving due to your symptoms, for work at least.
That is a huge safety risk for the business. And possibly for the doctors that leave you active for driving?
But if an accident happens it may be on you in the end as we are all responsible if we drive while impaired in any way..
I suggest you go to the dr and make sure they know of all symptoms..and that they know what your job is..
I don't know if they have anything "modified duty " that you could do in the office or ?
Good luck and be safe
Maybe your c1 c2 got misaligned with the hit.
some info here-
www.upcspine.com