The biggest thing is that people drive when they shouldn't. Sometimes your car just isn't going to do it. All season tires, 2WD, ice storm. Yeah that's when you see people sliding down hills. There's no traction and no automation is going to fix that. The best thing it will do, no joke, is just not start the car in those conditions.
You do see a spike of people who don't do well to adjust to winter driving. They don't give longer gaps, make sure they have more time before crossing intersections than they do. Computers will do that much better, eventually. I can't wait to go to work or drive around the city and not have to worry about someone texting, doing makeup or making poor driving decisions. Have a nap on long trips, watch a movie, finish up some work.
I can see computers having an amazing reaction time to some kid running into the street to catch a ball. An animal running in front of you at night. It's going to take awhile though. I wouldn't trust it right now to safely take me anywhere. There are just so many variables that the engineers have to account for. Weather conditions, people conditions, car conditions and on and on. It's nuts.