Well, I would say that most of the questions are very well chosen to highlight the intricacies of moderation, as evidenced by the fact that the only question where over 90% agree that it definitely violates the rule is someone driving their personal car into the park. All of the others are below 65%, because for every one of them you could make an argument that they should be exempted:

- police car and ambulance: definitely reasonable exceptions (the only thing that surprised me is that slightly more people would allow the police car than the ambulance)

- memorial: you could argue that a static vehicle installed as a memorial does not count as a vehicle anymore.

- rowboats: if there is a lake in the park, and if there are rowboats on the lake, you would assume that it's allowed to use them?

etc. etc.