All three of these are great drives. Lucky enough to have done PCH including Hearst Castle a few times. Once, my wife and I just stayed three unplanned days at a small down along the road as part of a two week trip. Awesome! Live in Florida now, so have taken the Keys road many times, and am missing Asheville and the Blue Ridge Pkwy, its been a few years now. Thanks Ladybug409 and stuwebb2 for sparking those cool memories.
One I will add back is not winding, but...crossing western Kansas on I-70 headed for Colorado is pretty unique and beautiful. Nothing matches the "big" western sky, and the sunflowers in August are memorable.
my favorite rod trip ever was driving us 1 through the florida keys it goes from key to key over a series of bridges very pretty those trips sounds wonderful