i've not driven that road for years, let alone in a car that could do it justice, but will return as have family very close by, Top Gear filming was stunning when JC fell for the CLK AMG Black
My home village is at the southern end,not a road you want to make any driving errors on,the sheer drop (crash barriers only installed about 5 years ago) on some parts is a couple of hundred feet and there are hundreds of white woolly creatures all over the place.
Like Scooby-Doo (your not a Field Spaniel living in Abercraf are you?), I live on the edge of the Brecon Beacons. Must admit this is a fantastic drive, although to the unwary or just plain stupid it is a very unforgiving road. Only my Honda Civic Vti ever did it justice and that was a good few years ago. I drove across it last summer it is much busier than I remember.