Waymo is level 3 at best. It is active in 1 flat city right now (and partially in another), and needs frequent interruption from remote drivers to get it out of hairy situations. You really think it will be fully rolled out in the 10 most populous cities in America in the next 6 years? You really think it'll work without any human interaction (local or remote)? This thing won't last 5 minutes in NYC or Philadelphia .