North Carolinians may someday have pizzas or groceries delivered to their homes or businesses by driverless vehicles, under a bill signed into law by Gov. Roy Cooper this week. The bill allows fully autonomous vehicles designed to deliver cargo to operate on public streets and highways in the state. The new law refers to them as "neighborhood occupantless vehicles" and permits their use on roads with a speed limit of 45 mph or less. It's not clear where and when such vehicles will appear in North Carolina. But Rep. Jason Saine, one of the bill's primary sponsors, says he wanted to make sure driverless vehicles would be legal when companies want to begin introducing them to the state.