So people see the impacts of this bottom-of-the-barrel, thick, sludgy bunker diesel that is used for fuelling the vessels that we're talking about, and they see it most regularly and obviously when they are looking at vessels that are sort of parked up, that are in ports—Auckland, Tauranga, Lyttelton—and these vessels are often kind of idling to keep the things going. You'll see the black smoke coming, literally, out of the funnels. I've seen it here in Wellington on a still day when the harbour will be smudged with a black air line across the harbour that comes—and Paul Eagle, I think he's seen the same thing. It's quite disturbing when it is obvious and literally putting a black smudge across the pristine air of Wellington. Now, I know that Wellington doesn't actually have too many clear still days, but when it does happen, it's very marked, it's very obvious, and it's very apparent to even the casual observer—the obvious air pollution impact that this heavy diesel bunker fuel has.