From the article:<p>&gt; Musk, who has pushed for a carbon tax before, said the tax should be revenue neutral and phased in over a period of years. A revenue neutral tax means governments would still receive the same amount of money despite a change in the tax code. Under Musk’s scenario, taxes would be weighted heavily on carbon, and reduced in other areas. This approach already occurs, Musk said, citing how taxes are higher on cigarettes and alcohol than fruits and vegetables.<p>He&#x27;s proposing lowering other taxes simultaneously, so the government gets the same amount, no tax hike necessary.