Don't know about Switzerland, don't fancy going to jail. I don't really care about autobahnns either, they're still motorways

Corsica looks stunning but seems like it might be better suited to motorbikes?

France, Austria, Italy, maybe a bit of Germany sounds good for sure. I wanted to do the Grossglockner in Austria for a long time.

Where is the Picos? Spain?

So something along the lines of this?

https://www.google.com/maps/dir/Dubl...53.3498053!3e0

That route would have the added benefit of Munich and Stuttgart on the way

Here's a bit of inspiration:

https://www.youtube.com/watch?v=H6JlOlBSZlQ