text: I mean there are a few things that could be good about a driveless car, but for the most part there is more negative things than positive things on them. Also they could be very expensive. People could not afford them. This is why they should not exist.   I am doing a essay about technology to read the emotional expressions of students in a classroom is valuable. I dont think technology can tell someone in emotes by scanning their face. It cant go thou are mind and say they are feeling sad. Us humans can tell if they are sad or happy because we have been thou the same things they are going thou.