They already do by the fact that 200mph speed is much more fuel consumption per unit of distance traveled than say 60mph. There is no vehicle I know of that us

They already do by the fact that 200mph speed is much more fuel consumption per unit of distance traveled than say 60mph. There is no vehicle I know of that uses the same amount of fuel at 60mph as it does at 200mph for unit of distance traveled. Include the tax in gasoline per unit of volume and the people going 200+ will pay much more than those going 60. (Much much more)