When a car or s.u.v. goes to fuel up at petrol station, senses will detect weight, engine capacity, fuel efficiency and so on and charge more per litre for vehicles that use more fuel. Why shouldn't a 4 cylinder driver pay less than a v8 driver?
Oil is the industrial worlds most precious resource. It is also one of its biggest polluters. Fuel companies make trillions of dollars and should be made to invest in this technology and receive some form of govt assistance as they also rake in billions of dollars from fuel taxes.