It's been in the newspapers down there quite a bit. Mostly Houston and San Antonio.
Here's one article about Volvo:
"Companies such as IKEA, UPS and FedEx have begun using autonomous trucks to make long haul trips across Texas, most often along I-45 between Dallas and Houston. In 2017, the U.S. Department of Transportation designated Texas as one of that nation's 10 proving grounds for autonomous vehicle testing. And Texas lawmakers have encouraged autonomous-vehicle development by making sure traffic laws do not encumber the companies."
https://www.houstonchronicle.com/business/retail/article/vol...
Here's one article about Volvo:
"Companies such as IKEA, UPS and FedEx have begun using autonomous trucks to make long haul trips across Texas, most often along I-45 between Dallas and Houston. In 2017, the U.S. Department of Transportation designated Texas as one of that nation's 10 proving grounds for autonomous vehicle testing. And Texas lawmakers have encouraged autonomous-vehicle development by making sure traffic laws do not encumber the companies." https://www.houstonchronicle.com/business/retail/article/vol...