Our first day on the Blue Ridge Parkway started out very foggy (this would become a theme for any time on the Parkway before 9:00am), but cleared up eventually.  The Parkway is gorgeous - every couple of miles you pass some sort of amazing overlook, or a hike, or a pretty little picnic spot.  Most of the Parkway is above 2000 feet, and big chunks of it are above 3000 feet - so the views down into the valleys are beautiful.