text: Eventhough the invention of the drverless cars has a long way to be completed the difficulties are not going to be an obsticle for the people who want to see this dream become real. In conclusion the development of the diverless cars can be a positive outcome on the enviorment, transportation, and human safety.               The use of this technology to read emotional expressions of students in a classroom is valuable because many students have a hard time in school and with this technology computers could learn whether or not a student is mad, happy, sad, etc. Just from a computer screen reading their facial expressions. So if a student is happy and smiles at a computer screen an ad will pop up but if you then frown, the next ad will be different.