That's about *energy* payback, not CO2. The only mention of CO2 that I saw is that they have essentially zero emissions, which is true, but not the point I addressed.
My concern with them is the large carbon footprint (not the energy consumption) of mining, refining, and manufacture. The energy cost and the carbon emissions are related, but the devil is in *how* they're related. And because no-one talks about this point, I'm suspicious about it.
One pill makes you larger and one pill makes you small And the ones that mother gives you don't do anything at all Go ask Alice when she's ten feet tall
And if you go chasing rabbits and you know you're going to fall Tell 'em a hookah-smoking caterpillar gas given you the call Call Alice when she was just small
When the men on the chessboard get up and tell you where to go And you've just had some kind of mushroom and your mind is moving low Go ask Alice I think she'll know
When logic and proportion have fallen sloppy dead And the White Knight is talking backwards and the Red Queen's off her head Remember what the dormouse said Feed your head Feed your head
I think it's also criminal: they tell us that this country's a democracy. If that's true, there's no such thing as "government property": it's ours; without our permission, what they're doing is theft, and the buyers are receivers of stolen goods.
And how about this? QANTAS was a magnificent cash cow for decades: milions of dollars every year into consolidated revenue; then Keating sold it. Similarly the Commonwealth Bank (Hawke was PM at the start of th proces, but Keating was the Treasurer, and carried it forward and completed it after he became PM). How the f*ck was he able to tout himself as "the greatest treasurer in the world" and still keep a straight face?
Ned