Hello again, I see you are still active but you didn't respond to this comment.

I have just reverted your changes (133112472).

I've just been there and nothing changed. The streets are still only for pedestrians. I have also added some barriers I saw there. 

I suspect you are not from here, you saw roads in aerial imagery and you retagged them.

If you had been to the park, and you had saw vehicles using those roads, and then you retag them. That would be perfect! But this was not the case.

Or, if you hadn't been to the park but you had some reliable source that the cars can use those roads. Ok, that would be fine I guess.
Or, if there isn't any road mapped yet, and without being here you may assume that the roads you see in the images are for cars. Ok, I would understand that, even some areal imagery may be old and still have some vehicles using them.

Please, reconsider future changes (anywhere) if you can't survey the site or you don't have another source.