It's not even a tax on cars. It's a tax on fuel for cars. They could: Drive less. Just go other places less. Increase fuel efficiency, such as with a smaller ve

It's not even a tax on cars. It's a tax on fuel for cars. They could: Drive less. Just go other places less. Increase fuel efficiency, such as with a smaller vehicle. Switch to a hybrid or electric car. These are all choices that otherwise, they would not make, because it's cheap enough and easy enough to run a diesel car that alternatives aren't important. The point of a carbon tax is to change that equation, such that people start looking for alternatives.