text: So, this program would not be useful because people would get uncomfortable, the space, cost and proccessing power need to run the program, and individual detection is needed before it can be used for a class room.First of all to imform fellow citizens about the advantage of limited car usage.'' as a result,70 percernt of vaubans families do not own car and 57 percent sold a car to move here''.''Automobiles are the linchpin of suburbs where middle- families from chicago to shanghai tend to make their home''.and '' passenger car are responsible for 12 percent of greenhouse gas emissions in europe. and up to 50 percent in some car-intensive area in the united state''.