OK, that was a bad example, I didn't really mean to use an example where the car literally causes the death.. but what about emergencies where a collision IS imminent? A computer can react faster than a human, so if a collision is absolutely unavoidable wouldn't you want the car(s) involved to employ some strategy which seeks to minimize injury by using whatever degree of control remains?
Well, if one of them is my car, I want it to minimize injury to me. Presumably, the vast majority of other drivers feel the same way - self-preservation is pretty instinctual.
As for liability, a collision-mitigation system manufacturer would be no more liable for injuries sustained than an airbag manufacturer.
Except an airbag doesn't make a decision to sacrifice Person A for the sake of Person B. Comparing dumb systems to intelligent ones is like comparing apples to tree trunks - they're both plant parts, but the similarities end there.