Fuel is metered at the pump. Electricity going into a car can't be metered at every receptacle. For this to work, the metering would have to be in the car, wit

Fuel is metered at the pump. Electricity going into a car can't be metered at every receptacle. For this to work, the metering would have to be in the car, with some government regulated system included in the power management. I think that's doable, but not for existing cars. A GPS could be easily installed in to any existing car, non-invasively, and mileage is already tracked.