Great Thread!
I'm doing a 440ix Cabrio ED next month (9th Sept). Am doing a pretty big loop up to Dresden via Salzburg, Berlin then over to Munster and Hannover, down to the Ring and then Koblenz, Frankfurt and Stuttgart. Hitting ALOT of Aviation sites/museums~
Your guide is great, but you missed a cool place-
MotorWorld over in Stuttgart.
http://www.motorworld.de/
All the best and keep it up.
Always
Motch