I've travelled this route from Pegnitz to Forchheim a few times, but the problem when you are a truck driver is schedules... so no chance of stopping really, not really a lot of room to park up a 40 footer anyway. But this has to be the best road for scenic views i've come across.
If you live in the Nüremburg/Bamberg area, check it out, you will not be dissapointed.