In Germany the speed limit is frequently much lower that that, and driving faster than about 80 mph (130 kmph, called richtgeschwindigkeit) incurs increased liability even on the autobahn without any speed limits.
In my experience not many drivers cruise at speeds of 100 mph (160 kmph). The richtgeschwindigkeit is much more common.
In my experience not many drivers cruise at speeds of 100 mph (160 kmph). The richtgeschwindigkeit is much more common.