That is such a great stretch of road!! We've been in our truck, because the times we've been in the area it was for mountain biking. It's still a blast in the truck but we always say, "How awesome would this be top down in the roadster!" I agree with Vanguard's starting point.
BTW, if you're in the area, do yourself a favor and get yourself off of the road for an adventure, whether on foot or on a bike. It is truly awe inspiring!