"I happened to glance in the outside rear view mirror, and to my horror saw a car WAY back at the end of the line pull out and come barreling down the line of cars! He must have been going 85-90 MPH! I glanced ahead and saw several cars coming the OTHER way appear in the distance." {At this point Bill D should have immediately started to brake to leave an obvious and bigger gap in front of him that the overtaking car could see} Before I could yell "Oh, NO!" {Yelling "Oh, NO! achieved exactly what Bill D?} "this idiot passed me, hit his brakes, slipped into the barely sufficient space in front of me just as the 3 cars (probably scared to death) passed going the other way! - Ehmm No Bill D the lead driver of the car in the oncoming traffic instead of pointlessly yelling anything probably started braking as soon as he saw the car coming towards him.

If someone is overtaking you, you should do everything in your power to let them do so as quickly and as safely as possible.

Very old US TV Series starring Broderick Crawford called Highway Patrol at the end of each episode there was a road safety tip - the only one I remember went something like this:

"Remember folks when driving it's not who's right but who's left".