Haw. Rev. Stat. § 290-42: Disposition of license plates.

Whoever shall abandon a vehicle, or having attained custody of an abandoned vehicle, disposes of, or conveys it as junk shall remove and transmit any license plates on such vehicle to the county agency charged with carrying out the functions and requirements of this chapter. The county agency receiving the license plates shall provide for the destruction of the plates. Violation of this section shall be a misdemeanor.