Zoox Inc. on Friday acquired a permit from California point out authorities to examination its self-driving automobiles without having an in-auto backup driver, marking a acquire for Amazon.com Inc., which acquired the startup in June.

The new permit will allow Zoox to examination two autonomous automobiles without having a driver guiding the wheel on specified streets close to its Foster Metropolis headquarters, the state’s Department of Motor Motor vehicles claimed in a statement.

Amazon has been aggressively expanding into self-driving technology, with the firm also taking part in self-driving auto startup Aurora Innovation Inc.’s $530 million funding round early final 12 months.

Other businesses who now maintain a permit incorporate Alphabet Inc.’s Waymo, Chinese startup AutoX and Nuro Inc.