I'm guessing you're not in London. I regularly see people stepping out into moving traffic if they think they have half a chance of making it across. I don't think that behaviour will be significantly changed by driverless/automated cars being the norm.
Today I saw 3 people make the same calculation for an oncoming bus; they all had to do the quick-step leap to safety when they all realised they had misjudged the bus' speed. No one else at the lights even blinked let alone tutted.