"I used to like driving..."

Back From War, Fear and Danger Fill Driver’s Seat

I don't know one veteran that doesn't experience some kind of hyper-vigilance when certain things are observed while driving. Even if you don't notice it as a civilian, most veterans take notice of boxes and trash, potholes, dead animals, and anything hanging on a bridge that crosses the road they are driving under... because that is where IEDs were hidden (among other places).