That's actually not accurate. The Dutch were as car mad as anywhere between 1950 and the 1970s. The cycling culture that developed subsequently was hard fought

That's actually not accurate. The Dutch were as car mad as anywhere between 1950 and the 1970s. The cycling culture that developed subsequently was hard fought for by activist groups throughout the late 60s and 70s, before being implemented across the country by various city councils in the 1980s and then developed further with national level infrastructural improvements in the 1990s. There's lots of good documentaries on YouTube about the change, highly recommended if you're interested in urban planning or in the possibilities for introducing cycling infrastructure. In Utrecht one can see many roads which have multiple cycle lanes and pedestrianised parks along the middle. These roads were originally developed as 4 lane highways for automobiles before modernisation.