“Motor vehicle” defined

As used in this subchapter, the term “motor vehicle” means a vehicle propelled by an internal-combustion engine, electricity, or steam. The term “motor vehicle” shall not include a traction engine, road roller, vehicle propelled only upon rails or tracks, personal assistive mobility device, as defined by § 50-2201.02(12), a battery-operated wheelchair when operated by a person with a disability, or a motorized bicycle.