AK is pretty bumpy in places. i have ms and being bumped, touched, jarred, etc. often makes that feeling of one's skin crawling happen throughout my whole body, from the spine and outward--not just the skin!
I hated parts of it when I was being pushed in a manual wheelchair. however, my last trip i was in an ecv and i don't really remember the bumps being a problem. maybe i was subconsciously more aware of the path i chose, maybe the "shocks" were better on the ecv, or maybe being active vs. passive helped, too.
dj