Get into a car and reproduce the execution of the attack.
Have the people playing the attackers ACT like attackers,curse,swear,grab,push,pull and see what reponses can be done under realistic conditions,or as close as can be gotten .
How about when the first guy approaches the car and sticks his hands inside you grab the hands/arm and put the car in reverse,or go forward ?
How about as he approaches the car and makes demands,when close enough open the door and slam it into him ?
How about as he puts his hand into the car you grab it,pull it,turn it ,and get him close enough to grab his throat and twist it ?
I had an incident while driving a few years back,when cars had pull up button locks
I was the Second car at a red light
Drivers side window down
Guy runs over from between two cars ,left hand on the door ,over down window,near the pull up door button,his right hand grabs door handle and tries to pull door open
Car was left in drive,foot on brake
My Left hand grabbed his left arm and pulled him to car until face was close enough
Right hand palm heeled him twice in the face
Light turned green and I drove forward
If the instructor and students took the time to do the scenario over and over they could come up with viable solutions.
There are no guarantees but at least there would be some sort of control for the victim if they decided to act and not just give up.
My opinion