This reminds me of the response to the surgeon's dilemma about trust in hospitals. I want to say occupants, because if fear of being sacrificed in trolley problems causes fewer people adopt safer non distractable non fatiguable robot cars then it seems like a net utilitarian loss. If that were not the case, like for example if the safety advantage became overwhelming enough that people bought them anyway, then probably it should just minimize deaths. (I only thought about this for a couple of minutes though)