What do you mean? There are cars are all over Holland, even the city centers. Yes there are plenty of bikes and decent public transit as well. But here is not a lack of cars.
I do often wonder why all those people insist on taking their cars into the city center, though. There's a busy shopping street near my home that for inexplicable reasons is not car-free, and at some moments the street is completely blocked by cars, and they're making it hard for bikes to get through as well. I don't understand what makes people want to take their car through that street. That seems like an exercise in frustration.
We have a car, but we only very rarely use it to travel into the city. Bike is usually far better, even with kids.