As you can see from the media attached to the press release[1], the port is exposed through an opening below the rear seats it looks like. Based on the wording in the press release, seems like they assume the battery wouldn't start burning on its own and so any fire that got the battery burning already consumed the interior.
So this is not so much for saving your car, but rather not binding firefighters up for hours.
So this is not so much for saving your car, but rather not binding firefighters up for hours.
[1]: https://media.renaultgroup.com/fireman-access-an-exclusive-i...