Would be cool to see them return. The prohibition on flammable gases for lift seems bad to me. So long as the airships meet some safety threshold (which might

Would be cool to see them return. The prohibition on flammable gases for lift seems bad to me. So long as the airships meet some safety threshold (which might be lower for cargo only ships or for autonomous ships - especially if they fly over low population areas) then I don't see what the problem is. I wonder if they could first prove themselves in an area with less regulations.