Self-driving cars won't make us more productive

Self-driving cars are raising hopes that we'll get a lot done when we don't have to drive anymore. According to a University of Michigan study, that's about as likely as a parent finishing two memos and a big presentation while taking a teen-age learner out to drive. The average U.S. driver spends an hour a day in their car, but the study concluded that for 62 percent of Americans, freeing up that driving time won't make them any more productive. And the findings suggest riding in a self-driving car may be a white-knuckle nightmare of nerves, car sickness, unsafe seats and flying gadgets. Maybe ordinary people have sensed this already.