What has been described a motor vehicle for one statutory purpose may not suit the purpose of another. In its customary meaning, a motor vehicle has the essential characteristics of a self-propelled contrivance designed for the carriage of persons or things. By definition, railway devices have been excluded.
Process in which one parent cell divides to form two single cells? That process is called Mitosis in regular cells and Meiosis in sex cells or asexual reproduction. Edit
Mitosis is the process by which a cell separates its duplicated genome into two identical halves. It is generally followed immediately by cytokinesis which divides the cytoplasm and cell membrane. This results in two identical daughter cells with a roughly equal distribution of organelles and other cellular components.