Good start. Standard US speed limits are a joke. In Germany you won’t feel comfortable at far right lane at 85 mph on freeway. (Older sunday drivers will hit your rear).
Ugh, I know. Living in Kansas with the excellent road conditions, long flat straightaways, and gentle curves, there are parts where one could comfortably travel over 100mph.
I've had the good fortune to drive the Autobahn, and I'm telling you .. YOU'RE RIGHT.
Last time I was in Germany, I had a Mazda 6 Turbo-Diesel for a rental. I was doing 135kph (85mph) on the Autobahn in the right lane and getting my doors blown off. It wasn't until I was driving at about 170kph (105mph) that I was "keeping pace" with the other cars on the road.
Funny thing, that turbo-diesel didn't seem to be straining at all and still did better than 30mpg. Go figure.