[Ducati] Euro trip (suggestions?)

[Obaa]

Quite a few of you seem to travel to Europe regularly.
 I'm about to go there for the first time, and was
hoping to glean some travel advice....
Through sheer luck, I'll be in Europe finishing some
business just as I begin my sabbatical.  My wife
doesn't want to travel with 2 little kids to meet me,
so suggested that I take a couple weeks travel and
explore by myself; life is good...  
I'd like to visit Bologna (what else? :), Maranello
(Ferrari), Vincenza (Campagnolo), Stuttgart (Porsche,
MB), and the Nurburgring.  Anything else
gearhead-related would be icing.  However, I don't
speak Italian or German, and certainly don't know my
way around.  Are there any tours or routes that link
these places together, or hints for getting factory
tours (I understand Ferrari and Lamborghini are hard
to arrange).  Is there perhaps an organized motorcycle
tour (I think something called "Alpine Tours"?) that
follows this route?
Any suggestions would be appreciated.  Almost
everything is flexible, other than the dates (roughly
early-mid August; is all of Italy still "closed"
then?), and departure airport (Frankfurt).
Many thanks!