You people arent too good with math are you?
Ok, well lets break this down just for kicks, and using the US as an example
$4.6 billion huh?
US crude consumption daily=20 million barrels@42 gallons each=840 million gallons crude
840 million gallons crude times 50%, cause only half is used on gasoline/diesel for transportation needs= 420 million gallons of petrol
420 million gallons @$3/gallon = $1.26 billion, thats US numbers, much less for australia
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world usage=82 million bpd or 41million bpd of petrol*42*$3=5.166 billion-------->that would do it, good luck lasting more than part of a day LOL, gasoline is more addictive than drugs for 99.9% of the people on the planet