@EUCommission great stuff!!! Not sure if the details have a comment on the Gottard pass descent: looks like it uses the old, and much quiter, Tremola route. That's not going to be fun if you're not prepared, it's absolutely beautiful but made up of pointy hexagonal rocks as road surface.
I've cycled it multiple times from Airolo (opposite direction) on a road-racing bicycle and wouldn't even think of doing that on 25mm tyres and no shocks downhill.
The 24 hairpin bends are stunning, you should absolutely ride it if you can, but come prepared!