Thanks for all the responses. I appreciate all your advice. However I am there to pick up the baby so gotta do that first! We are both very well traveled and can handle jet lags very well! in fact last March I did a 9 hr flight to London from Mumbai toured London the whole day and flew back to the States in the evening.. just saying!
This is the itinerary
23rd leaving Newark
24th 7:50 am reach Munich pick up car, do the Welt tour and enjoy Munich
25th leave for Berchtesgaden in the morning and leave for Fussen late afternoon (partial drive through Alpenstrasse. Overnight in Fussen
26th enjoy neuschwanstein castle area and leave for Lyon France ( this maybe be the trickiest). overnight at Lyon.
27th morning take the first back road drive from Puy-de-Sancy to Carennac, France. overnight at Carennac, france
28th morning drive to Sainte Ennime France seeing the Aquaduct bridge and the back road scenice drives. Stay at the Chateau in Sainte Ennime overnight
29th morning drive to Sainte-Maxime driving through Provence and halting for lunch in one of the provence towns. Overnight at Saint Maxime
30th stay at Sainte Maxime and explore provence
31st explore Provence and drive down to Nice (car drop off )
1st Nov stay in Nice
2nd Nov 7 am catch flight from Nice to Newark