Delete a Message
If people see comments on still not validated cars, and they can't reply, they will understand it's pending.
Which is a problem: they would then comment on the movie page, they would not resist
Also, if comments are visible but not the vehicle itself, it is annoying.
So for me that's not a viable option.
The only one that would work is that people could put a "temporary" comment on the not-validated page, which would then be added as first comment when the page is validated.
But it requires a little work, no idea when I would do that, as I don't have much time for the site and already so many things to do...