I drove there from Dover to Calis & then Hirtshals (Denmark) to Larvik (Norway). Two of us then drove up through Sweden and back through Norway, via Troll Wall. It was all very pleasant.
I've read somewhere (on a Norweigian ferry website) that the Bergen ferry is actually starting up this summer. There have been rumours for years, but it looked pretty official this time.
We had great weather, August, but it got cold (especially at night) as Sept approached.
Good luck.
Post edited at 22:28