Section R309.2.1 — Rooms or spaces that store electric powered vehicles shall be separated from adjacent spaces by one (1) hour fire-resistance rating walls, ceilings, opening protectives and shall contain a heat detector which upon activation will result in local alarm. Section R-309.6 is added to read as follows: "Interconnecting Doors." All doors between garages and living spaces of the one- and two-family dwellings shall be provided with a self-closing device. The self-closer may be non-listed but must be sufficient to close and latch the door from an open position of twelve (12) inches.