Pol 2: Fear not; we'll simply pass a different tax scheme and snare them.
Pol 1: But the selling point to support the car's higher price was how much money it would save the owner over time.
Pol 2: screw 'em!
No problem. Electric meters on the cars and automatic reader setup at the authorized DMV smog registration points. Registration renewal will require car to pass through like smog inspections now. Problem solved.