We'll be on the road again to Durham in an hour.
We've memorized the morning radio schedule of every radio station between Nags Head and Durham.
We know the location of every gas station and McDonald's (Tricia's choice, not mine).
We know where the cleanest restrooms are.
We know where every rest stop is.
We know which convenient stores sell V-8 (again, Tricia).
We know exactly what time we'll arrive.