Harlan F. Stone,
Carley Hamilton v. Snook Cottingham…
“ But we are now concerned only with the use of motor cars in intrastate commerce, and in any case, not the precise name which may be given to the money payment demanded, but its effect upon the persons paying it, is of importance in determining whether the Constitution is infringed. Whatever other descriptive term may be applied to the present registration fees, they are exactions, made in the exercise of the state taxing power, for the privilege of operating specified classes of motor vehicles over public highways, and expended for state purposes. ”
