So what do you think he's looking for :>
he wants you to start by saying what is your risk assessment technique
i doubt that anyone will design their own
so you say you'll be using fault trees or fmeca
then you need to show how that technique works in the context of driverless cars
so grab a random third party effect
say the driverless car failing to stop a pedestrian and hitting it
and draw a fault tree
however, there are still no proper refs for this, so we're working around it
then in the next section you have evaluation
you show the fault tree to a number of users along with some brief (probably verbal) instructions for reading it
and have them do a questionnaire on how well they understood the causes of the failure
then have them do a nasa tlx form
next section, you describe the results - out of x people, y people understood that..
maybe some bar charts too
then you need some conclusion where you summarise the users's accuracy in understanding the events that caused the failure
and also their overall thoughts on how ok is the technique (that's what tlx is for)
do you understand now, why i'll be submitting it on monday

I understand what you are saying, I believe you are right