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 soonI 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