Bonnefon et al. conclude that the regulation of autonomous vehicle ethical prescriptions may be counterproductive to societal safety. This is because, if the government mandates utilitarian ethics and people prefer to ride in self-protective cars, it could prevent the large scale implementation of self-driving cars. Delaying the adoption of autonomous cars vitiates the safety of society as a whole because this technology is projected to save so many lives. This is a paradigmatic example of the tragedy of the commons, in which rational actors cater to their self-interested preferences at the expense of societal utility.