... I stopped at a nice little lake in Switzerland!

It's a 4 hour drive there, then another 4 hours to Genua and from there the overnight ferry to Sardinia.
Which is a really nice, de-stressing way to travel, it's possible to stop places, have nice food and look around and go swimming...

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And the route is ideal for this, from where I am it's pretty much 800 km straight 'down', Germany - Switzerland - Italy, so stopping in Switzerland works like a charm.