text: Why couldn't they be used fully now? They aren't really as reliable as they need to be so they can't be used instead of real person. Driverless cars don't seem to have the ability to deal with unknown stimulus such as an accident on the road, therfore it is ill equip to make an apropriate decision to avoid these situations. And it appears the they can't handle speeds that you would find on the highway. Driverless cars aren't perfect but they do have some advantages along with the disadvantages.