Meanwhile the most inefficient form of transport the motor car is not taxed. Neither are trucks.
The carbon tax will encourage people to drive more cars and push them away from mass transport because trains and planes will be paying the tax. Aviation will be paying the full economic cost of the carbon tax.
Carbon tax also won't factor in the environmental damage done by building roads, a comparative advantage that aviation has over cars/trains/buses/trucks.
If the Greens/Labor government were anywhere near serious about this they would be encouraging people to get out of motor cars and into:
Bicycles
Public Transport (bus/train)
Planes
Walking
Sailing
Instead they are going to increase the cost of public transport and aviation (which is very efficient form of transport) and leaving the motor car exempt. Would have to be one of the most hypocritical policies ever made by any government anywhere.
IF the carbon tax is about saving the world then tax EVERYTHING no exceptions.