I guess people have no business being on the roads then, because all of the actual crashes in that video were vehicles driven by humans. If they had been follow

I guess people have no business being on the roads then, because all of the actual crashes in that video were vehicles driven by humans. If they had been following the rules of the road with proper spacing between vehicles, they wouldn't have gotten in this collision after all. I think you're overestimating human drivers frankly. Collisions like this one happen between humans every day, multiple times per day across North America, you just don't hear about it because normal human error is at fault.