Amna Nawaz:

The idea of a future with self-driving cars sparks both fascination and concern.

Just yesterday, Waymo announced the start of a self-driving car-sharing service in Phoenix. And, yes, the cars will still have a backup driver in case of problems.

But the stakes are high for the U.S. trucking industry, too.

And that's the focus of tonight's report in our series The Future of Work.

On the one hand, the industry has long faced a driver shortage. On the other, self-driving trucks could threaten the jobs of truckers, many of whom are older men without college degrees.

Economics correspondent Paul Solman explores whether driverless trucks could become kings of the road, part of our weekly look at economics, Making Sense.