That's exactly what I argue about. In a rare (but very important) occasion where risk taking would be needed, you're forcing the moral dilemma of an even rarer occurrence with a presumed victim. We don't know if it would come to that. For all I care there might be only some speeding on a rainy road. My car will recommend going slowly for my own sake, but in that moment I care less for me personally and more for avoiding wife's impending death. Actually, I fear that my car will not limit itself to recommending, it will force that on me, because it knows better, because the people behind the said decisions won't be only the engineers trying give their best, but also lawyers doing "mercantile calculation of legal liability", politicians trying to score on public safety through their regulations, and so on!