They will never ban oil engines in Australia until scientist have figured out Electromagnetic antigravity propulsion for road and air travel.
Even if Australia was to ban oil engines like other countries, economies would collapse, and any ban would not last long.
Nothing more than a loony fantasy pipe dream to think that oil engines can be replaced with just an energy source that needs another energy source to charge it up as power grids would collapse and food materials and goods would come to a halt while waiting for the power to charge up their truck's planes and trains.