I understand, that's what I was, roughly, trying to capture with 'by a fair margin'. I believe Elon Musk has talked about targeting '10x safer' than an average

I understand, that's what I was, roughly, trying to capture with 'by a fair margin'. I believe Elon Musk has talked about targeting '10x safer' than an average driver. My guess is that's a sufficient margin to cover the vast majority of better than average drivers.