Robotaxis will be tools for passengers who use them, but also agents with whom other humans will negotiate traffic on the road. Will we, humans, be willing to cooperate with them or will we happily exploit them to serve our selfish goals? Recent developments in behavioural game theory suggest that we often cooperate with others because we recognize the need to reciprocally sacrifice some of our personal interests to attain mutually beneficial results. If this is true and if we perceive machines to be strictly utility-maximizing entities that are unable to spontaneously alter their ultimate objectives, we should expect us to cooperate with them less than we do with fellow humans. I will point to empirical studies that support this prediction and discuss policies that we may wish to consider to regulate our future interactions with autonomous machines on roads.