Alan Joyce just said on TV that if Qantas cannot get an alternative
fuel it has no future.

Many who have studied this problem believe we cannot set aside enough
land to grow bio fuel crops for the aviation industry and other
transport uses and not cause great starvation.
The poor ERoEI of the biofuels means it will require very large amounts
of land and the cost will be high.
Forget running around and getting used oil from MacDonalds etc, there
are just nowhere near enough fryers in the world for an airline.

Remember what I said about Japan, the scale is the problem.

Just in case anyone still thinks this thread is a lot of waffle;

Australian oil production has sunk to a 41-year low and is set to continue falling because the energy sector's focus has switched to gas. Oil production last year fell by 18.9 per cent to 92 million barrels, the lowest level since 1970, the latest report by Adelaide-based energy sector advisory firm EnergyQuest showed on Monday. As a result, Australia's petroleum trade deficit widened to a record $11.8 billion.
>

Do you realise what an almost 20% annual fall in production means ?
It means that in about three years we will be importing ALL our oil.
Already we import all of our petrol.

Now you know why they are closing all the refineries.

Import all our petrol?

Silliness.

Well Cherly we do import all our petrol except I suspect in WA where
the BP refinery is still operating.
I suspect it is because of the small amount of petrol used in WA.

I think there are 5 still working Bazz.

High cost of fuel is what it will take to instigate change. Smaller cars, and push bikes.
Fuel from algae. Grows 24 hours a day. Can be grown on wasteland.
Nothing will ever happen unless we have consistent high fuel costs.
Working on a hot water space heater, for household use. [ solar heate
If you can halve your gas bill for a start ,that has got to be good.