I'm an American who lived in Germany for several years. As an auto enthusiast and speed freak, I was in heaven driving the no-speed-limit sections of Germany's Autobahns. However, if the US had freeways with no speed limit, as is the case for certain sections of the German Autobahn, I would not drive them because, in the school of driving, the average American drives like a kindergartner, while the average German who ventures onto the no-speed-limit sections of the Autobahn, drives like a college graduate AND drives a vehicle meant for that environment.
The Germans take driving seriously, as should be the case everywhere...
For example, as others have pointed out here, obtaining a driver's license is a much more robust process in Germany. Also, their laws regarding drinking and driving are definitely more serious than in the US. Und so weiter...
One must be FOCUSED when driving such Autobahn sections. I'm not saying it has to be a tense experience. It DOES need to be a focused experience.
When I moved back to the US, my daily commute was on a gorgeous highway that hugged the foot of a mountain range, with 4 lanes in each direction. Very few cars traveled that highway. I might see 2 or 3 vehicles in the 0.5 to 1.0 miles ahead of me. Got it? OK.
Well, I still had the Autobahn mentality. Within a 12-month period I received 3 speeding tickets. Each time, the officer was kind enough to not write the ticket for the actual speed...
I then received a letter from DMV stating, literally: "You are a menace to the highway, " (YES, IT ACTUALLY SAID THAT) and blah, blah, blah, and if I did not change my ways, I would lose my license.
Sheesh. So I changed my ways.
Although there are still some carefully planned times and places when I cheat (and sometimes quite substantially), I've now had a clean record for many years.
BTW, I NEVER EVER EVER EVER speed in local traffic. This is not because I'm afraid of getting caught, but because the concept of hurting (or worse) a child or adult who might be walking, biking, etc., is abhorrent to me.