It is a brainless solution really, to do the Norway in a nutshell ® trip when visiting Norway. Surely it would be wonderful to take your time to experience the fjords, but it's a case of too-many-things-too-little-time. The 14 hour journey (between Oslo and Bergen, also available from Voss) takes you on/through the Bergen Railway, Flåm Railway, the Aurlandsfjord, the Nærøyfjord and the steep hairpin bends of Stalheimskleiva (only from May-September), which IMO is sufficient sightseeing. You can of course opt for longer transits at the fjords if you wish.