First off, you should make a difference between driving alone on a small country road and being in heavy traffic on the highway. Either way, your calculation d

First off, you should make a difference between driving alone on a small country road and being in heavy traffic on the highway. Either way, your calculation does not take into account that moving the hands happens in parallel with the critical (most time consuming) step, namely mental processing of the situation and deriving a resolution. So that makes no difference. You probably meant to say that the attention itself is missing for a split second? But that's something that can be said about car phones, eating food, etc, too. This is just within your individual responsibility, and this is what the law wants. It is, in fact, a risk-reward weighting. We can't use absolutes here ("not a single death is acceptable"), that would be ridiculous. The guy who wrote the parent comment explained that quite well. (not a tesla driver myself, I dislike driving in general and use my car very rarely)