yeah, as someone living close to the Austrian border and being over there very often... every single trip every nth car overtakes me when I'm going 130 as allowed. You just need to be local and know where you'll have to pay a fine. Depends on which of theirs though, the one from Salzburg to Italy isn't so bad, but the others are.
I wasn't complaining, I'm completely happy to go 130 - just stating the fact that there are more locals speeding than Germans. And the "fun" fact is that on certain days there are actually more cars with German plates on their Autobahn than Austrian ones.. or certainly a 2:1 ratio at most.