Imagine driving on the interstate and carefully overtaking an 18-wheeler when suddenly, as you peer into the rearview mirror, you notice there's nobody behind the wheel. Sound like the opening to a ...

Add Yahoo as a preferred source to see more of our stories on Google. With self-driving cars becoming a reality, driverless 18-wheelers are now in the testing phase.

Driverless freight trucks in central Texas These driverless 18-wheelers could soon be rolling down a central Texas highway. A stretch between Austin and Seguin is being used as a test zone.

Company now testing driverless trucks in central Texas With self-driving cars becoming a reality, driverless 18-wheelers are now in the testing phase.