California Code, Business and Professions Code - BPC § 25606

It is unlawful for any person to use any automobile or other vehicle to conceal, convey, carry, or transport any alcoholic beverages which are subject to seizure under this division, or any stills or parts thereof subject to seizure under this division, or any materials or supplies capable of and intended for use in the manufacture or production of alcoholic beverages with the design to evade the excise taxes or license fees imposed by this division. This section does not apply to any person who uses an automobile or other vehicle to transport distilled spirits for lawful use in the trades, professions, or industries. Any person violating the provisions of this section is guilty of a misdemeanor and shall be punished by a fine of not more than one thousand dollars ($1,000) or by imprisonment in the county jail for not more than one year, or by both such fine and imprisonment.

The department may seize any automobile or other vehicle used contrary to the provisions of this section.