This is nowhere as serious as the accident you described, but I was in a minor accident a couple of years ago in the snow. I was going down a particularly icy hill, and I was doing my best to heed all the precautions associated with winter driving--you know, slow down, use a lower gear downhill if you have an automatic (which I do), steer into the swerve if you lose control on a patch of ice and release your foot from the gas pedal, do not slam on the brakes--but nothing worked. As I reached the bottom of the hill, I realized I could not stop!

My tires were spinning wildly on a patch of ice. There was a woman waiting at the bottom of the hill at a stop sign, and I just knew I was going to hit her. I had absolutely no traction. I tried to steer out of her way, but I ended up ramming her. Fortunately, neither of us were hurt. She was in a Land Rover, so of course she had no damage to her vehicle. Meanwhile, my little Toyota looked like a crushed soda can.

It was frustrating, and I had to pay a deductible from my insurance, but it was a low-speed crash with no injuries. Ever since then, I've been afraid to drive in the snow.
So, I know what you mean. I didn't think of accidents much until I was involved in one. I always thought they happened to other people, not me. I hope this person you know will be all right.
"If a man does not keep pace with his companions, perhaps it is because he hears a different drummer."
--Henry David Thoreau
brains+brawn+beauty+personality=MacGyver