As far as I know, you can only drive fast in Germany: no speed limitations on the high roads.
Here in the Netherlands there are different speed zones:
villages and "normal" roads in cities: 30 km/hr.(zone)- when there is no "zone" 50 km/hr.
most of the roads in the west: 60 km/hr (zone) - when there is no "zone" 80 km/hr
motor road - 100 km/hr - motor way - 120 km/hr. very often reduced to 70km......
I used to drive a steady 90 km /hr (even in the villages) but after a few tickets I am trying to drive what is allowed (we are FORCED to slow our speed due to all kinds of obstacles in the road too....) sometimes I forgot and bumb my head...