Second, the passenger's lack of control in this event is frightening and basically means the person has suffered the knock out punch in storm chasing. For what I do in terms of entering cores, that would mean this person should no longer be considered a partner in serious chasing.
I don't know if I quite agree, though perhaps the partner should have been in the back seat. If the driver is experienced and in control they would be focussing on what was happening, the road, other traffic and so on. After all, hitting something like that with no experience would be a scary experience if you were that way inclined that way. That said, having lived through it they may well have learned that it isn't going to kill you and be a better person for that.
One experience I had was driving from Tenterfield to Casino. Coming into Casino the heavens opened with lots of lightning and hail to marble or maybe slightly larger size). My ex wife hated lightning, and at the time I was driving a Mazda with a sunroof so it was nice and visible. The rain/hail was sufficiently heavy to make it advisable to find a safe spot to pull over as visibility was stuff all. She was freaking but I quite enjoyed it. That would have been in the late 80s. As we went through Casino there was severe local flooding but my parents in Lismore hadn't got a drop. So it could well have been one of those storms from the NW.
Another experience which I have mentioned before was standing on the back deck of the place at Narara near Gosford years ago. Watching storms all around (we had a 270 degree view) but nothing close. All of a sudden I a bolt hit the tree in the backyard 10 metres away with no warning. Beautiful shower of golden sparks coming up. I didn't remember any noise but the ex said it was very loud. For the next 6 months I had constant dreams of close but silent lightning strikes while being out in the open. Then suddenly had a dream where I heard the noise and that was the last one. Funny how the mind deals with things.
Guess what I am saying is the passenger panicked at the time. After that it either would have scared them off or they would have dealt with it and realised once they had dealt with it they were never in any real danger of serious injury/death. And if a car gets damaged that is irrelevant in the scheme of things of personal injury. Could well have made them a stronger person.
Michael is probably the only one who can shed light if they went on to keep chasing or not.