Would you be interested in trying to grow any of these? None of the moderators seem to be active.
I might prefer to avoid ml for political reasons, though. Are you able to get the kbin posts to federate to your instance? I subscribed to it, but don’t see any posts on my instance yet.
Another option would be to create a new community, perhaps with a more general name like c/autonomousvehicles or c/autos. Thoughts?