... drive an average of 10 miles an hour over the limit
The only reason you've not had an accident is you've managed to be lucky. Speed is the number one cause of accidents, more so when the roadway is icy/snowy. That you don't reduce your speed *enough* in poor conditions is what created the "unavoidable conditions". What you really mean is you were going too fast, an icy spot caught you unaware and you lost control. A car that handles poorly in snow is a tire issue, a car that loses control is a driver issue. If you won't fix your driving issues, buy some good winter tires and drive like you still have shitty tires. Eventually, your luck is going to run out and someone's going to get hurt.
200 million North Americans would need to be buried
Driving the housing market even lower.
As for tires? The van with Blizzaks drives past 4x4 pickups spinning their wheels at stop signs/lights all the time. Stopping distances aren't much different from summer driving. You'll hardly notice icy roads with the right set of tires.
If altruism is so important to you, buy their patent and release it to the public domain. Or get off your ass and develop a better alternative.
I'm probably more liberal than most, but I don't get why some people think inventions helping poor or deprived people should simply be given away by the developer/inventor. Developers and inventors have to eat, too.
What is wanted is not the will to believe, but the will to find out, which is the exact opposite. -- Bertrand Russell, "Skeptical Essays", 1928