It happened to Pat McElligott, paralyzing her from the neck down.
McElligott was driving an Olds Regency when she was rear-ended in a collision. In a crash test, the seat collapses and the crash test dummy slams its head into the back seat, snapping the neck.
Internal documents obtained by CBS News showed that GM's own engineers and lawyers have warned the automaker repeatedly that yielding seats do not offer enough protection. One internal GM study concluded up to 470 lives could be saved each year in rear-end collisions if seat backs were strengthened.
And, handwritten notes from a GM meeting included this: "Seat back strength is a problem..." But the notes go on..."What do we do to correct?" The answer: "Nothing."
It happened to Kevin and Diana Gleason, whose GM car was rear-ended with deadly results. Kevin's seat collapsed and his body shot backward into his daughter, who was buckled in the rear seat.
"They feel the only reason I did not break my neck is that Sarah's body absorbed the energy and that's pretty tough to live with knowing that you're supposed to take care of your child and wound up my body killed my child," said Kevin Gleason.
The driver's seat also gave way under Clancy Day, who was aware that GM knew it would cost less than $5 per seat to strengthen the seat back and head rest. Day was an executive with General Motors.
"It's not good to know that people could possibly be killed or injured and if it could be fixed for pocket change, then it certainly ought to be fixed," admitted Day.
All of them sued GM because of the seat back failures, and the automaker settled the cases for millions of dollars. But GM has never publicly admitted to a problem with its seats, which the automaker says meet the federal strength standard.
Last fall, the nation's top auto regulator told CBS News it was time that the 32-year-old seat back requirement be strengthened.
"We've known for years that one of the areas that has not received enough attention is what happens to your seat when you have a rear end crash," said Sue Bailey, former National Highway Transportation Safety Administration (NHTSA) Administrator.
Bailey said then that NHTSA would propose a new regulation this spring requiring all automakers to strengthen the seats to prevent any more deaths like Sarah Gleason's.
"Any number of children's lives lost is too much. That's why we are working quickly to get these standards changed and we'll change them all within the next few months," said Bailey.
But that has not happened. Bailey left the government when the new president took over and she's now a consultant for Frd. It's also now months past the due date for the new seat back standard. But sources say safety regulators are determined to move forward and, in fact, they've put GM and other automakers on notice to expect the new rule this November.
The Gleasons and Clancy Day will be waiting. Pat McElligott, however, died of her injuries in May.
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