I don't think a self-driving car is safe today but the fundamentals of machine learning seem sound so arguably they will become safer with every mile they drive

I don't think a self-driving car is safe today but the fundamentals of machine learning seem sound so arguably they will become safer with every mile they drive (and every accident they cause). My only concern is that there should be somewhat responsible people working on it (this means for example no uber, Facebook, linked in, or ford self-driving car on public roads). But thinking about bit more, what if competitors shared data? Would that get us "there" (level 4+) at all? Would it be a distraction?