Ground transportation Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! Highway safety “A motor vehicle is a machine which incorporates a motor (sometimes known as an engine), and... Motor vehicles Pages in category "Ground transportation" The following 2 pages are in this category, out of 2 total. H Highway safetyM Motor vehicles Retrieved from "http://psychology.wikia.com/wiki/Category:Ground_transportation"