I was reading how China had started to test unmanned trucks, and in researching found that Australia was already a decade ahead.
(2014) Rio Tinto: rolling out the world’s first fully driverless mines
(2018) World-first autonomous trains deployed at Rio Tinto’s iron ore operations - This one is also apparently the ‘worlds biggest robot’
(2021) Rio Tinto to deploy world’s first fully autonomous water trucks at Gudai-Darri
Fun anecdotal fact, when they were doing the trials for driverless trucks the wear on the tires increased because the trucks were driving through the same ruts every time. They had to add some deviation into the GPS to stop that from happening.