I found it on a bike trip. I've also lived in one of those places (Oudezijl, North-Eastern Groningen). The North-East of the country here is quite bike friendly and definitely as close to car free as it gets. Houses there are cheap because of the fear of earthquakes due to gas extraction, which means it is easy to buy in but very hard to sell.
One very good way to find such houses is to look at night time satellite images and to look for places with very little light. Any houses in those regions will be in very lightly trafficked areas.
One very good way to find such houses is to look at night time satellite images and to look for places with very little light. Any houses in those regions will be in very lightly trafficked areas.