I live in Germany. And what you’re saying is (a) wrong, and (b) not even incompatible what I said.

"Some areas in Germany, 200 km/h is no problem for hours straight."

Please tell me of one road/route in Germany where you can drive '200 km/h for hours straight". I'll settle for tiny values of 'hours', as long as they're >= 1.

This ofcourse depends on time of day. An early morning somewhere around 2 am - 5 em we were driving from Sweden down to south-west germany, somewhere after Hamburg. We have a small car, top speed is about 200 km/h in downhill, wind in the back. I had the gas pedal to the bottom for several hours, most of the time it was four lanes and the only thing you saw was a truck every few kilometers. This was a few years ago so not certain if this has changed. Last time we drove down we ended up on the wrong highway and stuck behind a heavy transport for the same ammount of hours doing 70 km/h tops, when we weren't standing still. Friends told me the heavy transports blocking the whole roads have gotten a lot worse in the nights, the last years.