Wow - what a trip! Lots of so different places, lots of different countries, nice cars, Loch Ness, the autobahn, Michelangelo,
Fucking, and a flight home in LH F! Pity you were stuck with three weeks worth of supermarket food on this otherwise remarkable trip, but sacrifices have to be made sometimes!
I am surprised you had the cojones to drive an Audi A7 to Pompeii - car theft down there seems even more rampant than in Rome (in the neighboring Naples, I never saw any Mercedes/BMW/Audi cars on the street, and lots of car rental companies prohibit travel to Italy with German-made cars, although Sixt doesn't). But it seems you did fine and returned the same number of cars as you rented. Well done, and thanks for writing it down and posting pictures for us to see
