Google’s fully autonomous car has been involved in more than a dozen minor incidents before, but in all cases people – either the human behind the wheel or other road users – were blamed. Until now. Google confirmed one of its Lexus RX450h demonstrators collided with a bus in California after the car, and its ‘operator’, incorrectly assumed the bus would slow to let them merge. Google says the incident was complicated by sandbags positioned around a storm drain. It also says that from now on “our cars will more deeply understand that buses are less likely to yield to us”.