Anyone experience issues while driving on rough roads?
I thought that I finally am beating this PCS thing and had a major setback that need to figure out a solution for, since I need to be able to drive in the winter.

I live in AK and we just had our first major snowfall this weekend, so the roads are very rough, like driving on a washboard in many places.
I drove to work Monday morning and within an hour started feeling my PCS symptoms coming back (headache, fogginess, etc), so went back home after lunch. Got better today (but working from home).
Talked to a doctor I know in Russia on skype (I'm originally from Russia), she said it is probably related to my neck issues. She suggested placing an inflatable doughnut on the seat to take the pressure off the spine while driving. Also suggested continuing the neck exercises that she recommended earlier in the year and I've been doing them on and off.
Going to see my regular doc tomorrow to try and get a referral to a Physical Therapist to take a proper look at my neck.
I've had issues while driving back in May/June when I started getting out of the house and I learned where every bump/pothole is on my routes to/from work/stores and try to avoid every one and with time it seemed to get better, but obviously not as good as I thought.

A little background on my PCS - got a concussion while boxing (sparring) Dec 2012, unfortunately didn't realize how serious it was (no loss of consciousness, just a hard hit), my doctor and later a neurologist didn't give me the best advice either and as a result I got too active too quickly and went through hell (I'm sure many of you know) the two weeks of Xmas/New Years.
Got better by March and thought I was done, since doctors said three months of rest should do it. Went snowmobiling and you can predict what happened after that.
Spent two months off work just basically sitting at home staring out the window in sunglasses and earplugs going through worse time than the first time. Gradually was able to get back to work in May, but kept having setbacks as any minor bump to the head would set everything off. Also screwed up my stomach from taking all the meds (this is finally seems to be resolving now).
Working has been tough as I have the vision-related issues many of you have and I have to work on the computer (but it seems to be slowly improving, I'm able to work a full day with frequent breaks most of the time, and I finally got an appointment scheduled with a Neuro-Opth next month).

I have to say that this forum has been great, before I found it I thought that there's really something wrong with me since all the docs I saw had no idea what's wrong (as I know many of you experienced).