The world of self-driving trucks continues to expand as new technologies are being tested and more companies are emerging with revolutionary autonomous fleets of semi-truck tractors that increase safety and efficiency.

There’s no denying that these 80,000-pound tractor trailer rigs, which number over 2 million in the U.S., will disrupt the trucking industry as fleets convert to autonomous units.

It won’t be long before it will be normal to see these special trucks on the highway. Experts say seven years or less. Already, Australia’s Rio Tinto has 73 huge autonomous mining trucks hauling iron 24 hours a day.

In 2017, the Texas legislature passed a pair of bills legalizing both driverless cars and trucks, allowing these new self-driving trucking operations to deliver cargo to every corner of the Lone Star state.