if the carpark is no longer used, but still physically exists use the lifecyle tags to mark it as so
https://wiki.openstreetmap.org/wiki/Key:disused
You could also use https://wiki.openstreetmap.org/wiki/Key:construction or https://wiki.openstreetmap.org/wiki/Tag:landuse%3Dbrownfield
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            Published using OSMCha: https://osmcha.org/changesets/163388601
            