Programs are written by fallible humans. There is no self-learning AI. Maybe someday there will be, but until then I won't be surprised to see self driving cars

Programs are written by fallible humans. There is no self-learning AI. Maybe someday there will be, but until then I won't be surprised to see self driving cars make the same mistakes over and over again. How long will it take to update the software? How long will you get updates? If a weird weather pattern occurs, will every self-driving car crash on the same day?