Switzerland has good roads, although the terrain actively creates many problems. Their main feature is a large number of tunnels and excessive workload on weekends, holidays, the beginning and end of school holidays, when neighboring Europeans go on vacation together. Therefore, choose a normal day of the week for your holiday trip in Switzerland by car.
An alternative to busy tunnels can be a car transportation on a train. For example, Autoverlad Lötschberg will transport your car with up to 9 seats to Italy for 91 francs.