I saw a couple of comments from people who seemed to be unhappy that a state-run Belle Isle would no longer be a public park, but the idea that state parks aren't public parks is rather odd. They are provided as a public service by the government, and they are open to the public. If you think that a [[very low) fee for bringing a car into a park stops it from being public, of course you can, but that isn't usual definition.

If you drive to the main branch of the Detroit Public Library, you will probably have to pay to park, but it is still a public library. Many public parks don't allow cars at all, but they are still public parks. Free access to automobiles simply isn't an normal part of what people mean when they say something is public.