"Yeah. I get that sometimes. Not quite the same way as you do, I guess, but I do." He was US Military, after all, not Highways, and he had no real affinity to the roads. Most of the time his subconscious put him in places he thought he never wanted to re-visit, and PTSD was such an old excuse to attribute these things to.
"I think it can be a little unnerving sometimes. Not knowing something that's... such a big, important part of you."