Between Vehicle Excise Duty (VED) and fuel duty, the Treasury typically pockets around £40bn each year, a not insubstantial amount of money, but as the push for greener vehicles gets into its stride, there will very clearly be a hole in that revenue, and it’s one that will need plugging.

The two important questions are: Where will that shortfall come from? And will there be an overlap between VED and whatever new plan is put in place?