Driving on the Autobahn is not all that big a deal.
Frankly, I found the Autostrade in Italy more challenging, even though there was technically a 130 kph speed limit (which was sporadically enforced). It seemed that the additional curves (and more aggressive drivers) on those roads made them more challenging.
(But the above is just my opinion, of course)
One nice part about the Autobahns was the variable speed limits where needed, particularly for potentially hazardous weather, accidents ahead, and so on. Our traffic engineers could learn a whole lot from them.
I’ve seen collisions on the Autobahn, one where the engine of a Mercedes was found in a farmers field about 300’ away from point of impact.
I did two years in Italy (San Vito AS) followed by 4 in Germany (Ramstein AS). Had my 1989 Ford Ranger 4 cylinder. Top end was 85 MPH. Used to love riding the autostradas and autobahns!
I could go faster than 85 MPH—downhill. I never did know HOW fast I was going then...