Being in an older person and diminished health I would feel really threatened in that situation.
Well, I will shortly be 60. Not sure if that makes me old or young in your eyes ;)
However, I can tell you that I felt totally useless and helpless...the situation was out of my control. We could not move forward or backwards or even sideways...and I certainly was not getting out of the car.
Glad we had cell service. We called 911, and the dispatcher said there are lots of police there...and we said not where we are...there were a couple hundred invading thugs that had breached the line and marched across the property to the other side of the parking garage. Very scary...glad police came when they did.