Self-drive will see more cars on road

Self-driving cars are expected to usher in a new era of mobility, safety, and convenience. But people will use them too much.

Experts foresee robot cars chauffeuring children to school, dance classes, and football practice. The disabled and elderly will have new mobility. Commuters will be able to work, sleep, eat, or watch movies on the way to the office.

People may stay home more, because they will send their cars to buy groceries they’ve ordered online. Researchers believe the number of miles driven will skyrocket. It’s less certain whether there will be a corresponding surge in traffic congestion.