(NBC) - A self-driving tractor-trailer rolled along a Florida highway on Monday.
The Starsky Robotics Truck, driving itself on a closed portion of the Selmon Expressway in Tampa.
This is the first of three days of testing the automated system which controls acceleration, braking and steering.
The autopilot truck did a better job of staying in its lane than many human drivers.
There is a safety driver sitting at the wheel, just in case something goes wrong.