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
Meiosis. Meiosis is the process by which a regular diploid body cell divides and becomes 4 haploid gametes. It consists of two stages: Meiosis I and Meiosis II. Meiosis I is the first division of cells and Meiosis II is the second. This process is generally similar to regular Mitosis with a few differences that effect the end products. Image released into public domain by the US government; used with permission.