It looked like just another big rig rolling down a Texas interstate, a sight that inspired a thousand country songs. But this delivery in May was different because there was no driver at the wheel.

Driverless big rigs in Texas: Impact on jobs and safety To stream KHOU 11 on your phone, you need the KHOU 11 app.

There are active test runs in Texas, and a handful of companies are banking on making a big entry into the market as early as next year. By Jim Motavalli This is a return of Wheels, a column on the ...