I headed to Switzerland last weekend. The distance from Amberg to Zurich is 470km. Most of people will choose train as transportation tool in Switzerland, the 4-day Switzerland pass is around USD150, it's not cheap. If you have a car, strongly suggest to travel with a car. Switzerland is a small country and gas (NTD 37/liter) is much cheaper than Germany (NTD 51/liter) and France. You can have 100% freedom with a car and save more money.