Section 66-3-851 - Meaning of term "motor vehicle" as used in Sections 66-3- 852 through 66-3-857 NMSA 1978; unattended vehiclesA. For the purposes of Sections 66-3-852 through 66-3-857 NMSA 1978 "motor vehicle" means every bus, truck, truck tractor, road tractor and every driven vehicle in driveaway-towaway operations, required by Section 66-3-859 [66-3-849] NMSA 1978 to have emergency equipment thereon.B. No motor vehicle shall be left unattended until the parking brake has been securely set. All reasonable precautions shall be taken to prevent the movement of any vehicle left unattended.1953 Comp., § 64-3-851, enacted by Laws 1978, ch. 35, § 157.