I am planning a 4 - 5 week driving trip in 2019 to the Black Forest region in Germany and Alsace in France, and then to French Alps and then on to the south of France. The southern end of the Black Forest / Alsace trip will be Freiburg or Colmar. Should I drive to the French Alps or fly to Geneva to start the second part of my trip? Is there anything worth seeing between Colmar and Chamonix? Is it better to start the Black Forest / Alsace trip from Colmar and end up in Mannheim and fly to Geneva?