Around here, a typical highway is 70 MPH / 110 kph. Typical cruising speed is around 80 MPH / 125 KPH.
I've driven on the autobahn once. I enjoyed it, although I found I'm not really a left-lane kind of guy. Cruising at 140-160 kph was just fine for me, and when I drifted too far left, someone came flying up out of nowhere. Sent me right back into my place, he did...
Now, if I had the chance to live there for a couple of years, I suspect I'd get my average speed right up where it belongs