https://www.technologyreview.com/2015/10/22/165469/why-self-...
A self-driven car that doesn't watch out for non-passengers is likely to going to run afoul of the same sorts of laws that already exist to avoid drivers prioritizing themselves over anyone else. There's a case in SoCal now trying to make the manslaughter liability for this in a Tesla with autopilot enabled be assigned to the driver of the Tesla. It'll be interesting to see where that goes.
To make anything else happen, you'd need to regulate. But the "self driving altruism act", which mandates that e.g. the car you just bought must kill your family in order to save pedestrians you don't know - I think it might be really difficult to get that law passed. You might be able to make some headway with fleets.
IMHO markets, human nature and politics constrain the solution space for "self driving moral dilemmas" to a small subset of what's theoretically possible.
There are plenty of cases of people trusting the existing automated systems that specifically disavow being good enough to trust anyone's lives to. Even in light of news that other people have died in so doing.