We will be in Munich for 4 nights in September. Next we are traveling to Wengen, Switzerland by train. I've heard the Black Forest is amazing and I was wondering if it is worth it for us to rent a car in Munich and drive to the northern part of the Black Forest and explore part of it and then take the train and continue onto Switzerland. Does this sound like a good plan? Where should we drive to to start the Black Forest and where should we drop off a rental car and grab a train to Switzerland? We thought we could leave Munich in the morning and we don't have to be in Wengen at any certain time. I'd appreciate any help. Thanks!