One of the biggest advantages humans have is that humans can take risks. We have agency. Computers cannot take risks; not because they cannot be programmed to take risks, but because they are programmed by huge corporations with massive, centralized liability.

This is why level five autonomous cars will never exist. It's not a technical problem; it's a political one.

Its easy for someone on hackernews to say "maybe you shouldn't be driving if the car can't"; try saying that to a single mother working as a third-shift nurse, just trying to make ends meet, who's patients will suffer if she doesn't get to work. Try saying that to a technician who needs to get to a downed electric line in the middle of a torrential downpour to restore power to 20,000 people sitting comfortably in their homes. Try saying that to a Marine deployed in Nangarhar, under fire from enemy combatants.

Level Five autonomy could exist, but what we'd end up discovering is that humans let Jesus take the wheel far more often than the engineers in sunny Silicon Valley think. Level Five might mean seeing five feet in front of you and horrible traction, operating on your knowledge of the road, and just driving forward. Until an organization is willing to program a car to still drive forward in those conditions, level five won't happen. Uber practically shut down their entire program after one person died; over 100 people die every day in traditional vehicle accidents.