I did the surrounding roads last year, yes it's a great area. Did a few days in AlpirsbachBlack forest.. what an amazing to place to ride. I was there once on a car and once on a bike, will be going there again soon I didnt see your full 20min video, but did you also ride on neighbouring roads apart from B500? Most of the roads around it are spectacular as well.
I did the surrounding roads last year, yes it's a great area. Did a few days in Alpirsbach