Beautiful country, fantastic scenery, challenging mountain passes and good roads. The Swiss appear, however to be very aggressive drivers and they will do their best to prevent you overtaking them. If you go at the right ime of year and the passes are open for traffic you will have the best time of your life. If you pick the wrong time you might not find it an enjoyable experience. The weather was can be more suitable for skiing than biking. The Swiss charge about £18 for a motorway permit (vignette) and they are very strict about it. As Switzerland is not a member of the EC make sure that you check the legal requirements (Passport, E111, medical insurance) before you go. Thumbs up but be careful.