Imagine cruising down the highway when suddenly a massive, self-driving 18-wheeler pulls up beside you. No human in the driver's seat, just sensors and computers guiding this 40-ton behemoth down the ...

For our next story, we're going inside the cab of a big rig. The U.S. needs more truck drivers, and right now, new technology is promising to help those drivers or to replace them. NPR's Camila ...