Road tax in the Uk can be paid annually, 6 monthly or in monthly instalmentsI think it’s a good idea, no more tax disc, no annual bill (that you can avoid) (here you can tax your car for 3/6/9/12 months at a time not sure about U.K.).
no need for a separate bill magic electronics. Just add it at the pumps
Fuel duty can ‘easily’ be evaded with red diesel
As people move to electric cars they won’t pay fuel duty - it could be added to the price on public charging points, but not so easy on domestic or solar
Pay per mile will happen one day