Section 118948 Of Article 2.5. Smoking In Motor Vehicles From California Health And Safety Code >> Division 104. >> Part 15. >> Chapter 4. >> Article 2.5.

. (a) It is unlawful for a person to smoke a pipe, cigar, or cigarette in a motor vehicle, whether in motion or at rest, in which there is a minor.
  (b) For the purposes of this section, "to smoke" means to have in one's immediate possession a lighted pipe, cigar, or cigarette containing tobacco or any other plant.
  (c) A violation of this section is an infraction punishable by a fine not exceeding one hundred dollars ($100) for each violation.