I will be driving with my wife from Konstanz (Germany) to Interlaken for a day trip. This will be our first time in Switzerland. We want to basically enjoy the nature and countryside. So, what roads should around Lucerne and Interlaken should I be driving ? Are there some small villages which are pretty and along the route ? Also, should I use the motorways or to enjoy the scenery I avoid them completely? I would prefer to avoid the motorways because otherwise I need to buy the vignette for 40 CHF. However, I guess this would increase the driving time considerably.