MIT opened up their "Morality Machine" project over 2 years ago, asking participants to rate various accident scenarios self driving cars could run into. For those that want to take the survey, the site is still up. MIT published an analysis of their current data in Nature, and the results are interesting. For example, most people tend to spare females over males, spare the young over the old, and spare pedestrians over passengers. Some preferences were universal, while others, like sparing those with a higher social status, were strongly influenced by cultural backgrounds. Our data helped us to identify three strong preferences that can serve as building blocks for discusssions of universal machine ethics, even if they are not ultimately endorsed by policymakers: the preference for sparing human lives, the preference for sparing more lives, and the preference for sparing young lives. Some preferences based on gender or social status vary considerably across countries, and appear to reflect underlying societal-level preferences for egalitarianism.