Unmanned surface vehicles
Move over drones, driverless cars: Unmanned ship up next
It's not only drones and driverless cars that may become the norm someday - ocean-faring ships might also run without captains or crews.
The Pentagon on Monday showed off the world's largest unmanned surface vessel, a self-driving 132-foot ship able to travel up to 10,000 nautical miles on its own to hunt for stealthy submarines and underwater mines.