Car accidents are i guess one of the biggest problems of the world.
Indeed. Last time I looked it up, road accidents were the number five cause of death in the whole world. Even in places like Burma where people are starving to death, and places like the Mideast where people are killing each other in the name of their favorite imaginary supernatural being, and in places like Africa where they're doing both, road accidents are one of the leading causes of death. It's actually worse in Africa because the condition of both roads and vehicles is terrible.
I think it's a tribute to our mastery of nature that we've conquered so many of the "natural" killers like plague, influenza, polio, diarrhea and infant mortality, that so many people live to be killed by our own technology. We have a life expectancy in the 80s, which is more than twice what it was 150 years ago, and more than three times what it was in the Roman Empire.
Ya gotta die of something. I'd much rather get smashed by a truck than endure years of painful chemotherapy and die of cancer anyway.
Speed is the single most important reason that auto accidents cause human deaths.
No it's not. In the USA drunken driving is implicated in half of all fatal road accidents: 20,000 deaths per year. As for the other half, stupidity plays a large role. Walk through any parking lot and count the cars with bald tires. Extrapolate that to the defects you can't see, like worn brakes and misalignment. Then look at all the people who simply can't drive and shouldn't have passed the damn test! It's way too easy to get a driver's license in the USA, although to be fair I know it's much more difficult in most other civilized countries.
Get the drunks, the junk, and the incompetents off the road and we could all probably drive as fast as we wanted.