The following annual license taxes and registration fees are hereby imposed and shall be charged on each private passenger automobile operated on the public highways of this state and on each motorcycle operated on the said public highways:
No private passenger automobile and no motorcycle shall be used on any public highway in the state unless the proper license tag therefor has been procured and is securely attached to the rear end thereof, such tag to be so attached right side up with the number thereof in an upright position and plainly visible.