Or... maybe national taxes should pay for national roads as a form of national infrastructure, state or county taxes paying for state or county roads and local taxes for local roads. Isn't this the way roads were paid for before widespread use of personal vehicles? Roads are a shared benefit for all whether you own or drive a vehicle or not. Think of deliveries and public transport and other approaches in which you p…
To meet our goals we need to be doing the opposite, which is making private automobile use of the roads more expensive while creating more and better alternative transportation opportunities (ie. public transit, cycling).
Additionally if we shifted to other taxes, then this is a transfer of costs from relatively wealthy car owners to the relatively poorer who don't even own cars.