As far as I can see, a credit is just a slip of paper I buy from Tesla so I can manufacture my Ford/GM 7litre pickup?
You can also do that in your own business, one item sold issues a credit for another that pollutes more according to some measurement and some rule?
A credit is a permit to pollute in many cases.
Where the carbon going into the ground?
Who of us in the drilling business has drilled a Co2 well designed for injection?
As many people said climate change and carbon tax was just a way for government to raise taxes.
How high would a ton of 380 have to be before all ships would change the fuel source?
The answer to that is the level of tax that needs to be added from today to a reasonable target date where change can be made.
You can see the panic in states and Gov now if all cars became electric where is the lost fuel tax income coming from?
( not to mention the power)
Where is a rule that says your solar panel and wind turbine structure and blades dont have a coal input? The Coking coal industry is booming atm.
Which governments have a coherent energy policy that will work, maybe a few tiny places lucky enough to have hydro?
Maybe only France with Nuclear which is by far the lowest carbon emitter from build to end of life.