Yeah, it's tough because to be the Single Point of Truth, you'd need to be the List of Parking Places in the Netherlands, not just the accessible ones that you care about. You might even need to be The List for Europe.

Being The List of anything is a big, thankless job filled with nonstop toil to keep it up to date. It's not something you want to do unless it's truly your passion or somebody is paying you (a lot) to do it.

The problem is that building to tools to Be The List is pretty straightforward and fun. You only learn about the toil you've signed yourself up after the fact, once people start relying on it.

Good luck!