Earlier quoted context omitted.
Except I pay for the roads.. you know.. registration, taxes on gas, taxes on purchase of the car, etc etc... But hey, you're welcome to pay a little for the roads too ;)
Cars also inflict many externalities onto others that other forms of transportation do not (pollution, increased travel distance, injuries and deaths, etc.), and yet drivers seem less keen on paying extra to compensate for those costs.
This is more of a zoning issue though (I think mandatory parking ordinances should be repealed and all parking should be privatized).