Amazing trip if you wanna practice some corners and have some really stunning scenery!
The roads arent always Laguna Seca and there are numerous irregularities, but it really is a great ride. Especially on the peninsulla, driving towards Nesoddtangen on the RV156 and further towards Fagerstrand on the RV157 is amazing: lots of corners and great coastal scenery.
The 2nd part of the trip gets you through some more rural areas, with the same recipe: corners!
The last part is more of a drive trough some small villages and living areas, so mind your speed. I just took this to avoid highway at all cost.
Enjoy! This is a great trip with 3 hours of pure pleasure!