My concept would give the training data your horror of the impending crash.I have a different proposal: Tesla needs to change the UI to display what the car "thinks" and will do before it takes the real action.
Example: when the car creeps to the creeping line to make left or right turn, the software should display an icon/message to indicate the car decides to take the actual turn. This will make me feel safer and give me a chance to disengage if the the car has an unsafe decision. There are many other things the UI should tell us what the car is thinking.