Neither waymo nor cruise currently require human supervision. That's the whole point of this announcement: waymo is expanding their driverless program to SF. W

Neither waymo nor cruise currently require human supervision. That's the whole point of this announcement: waymo is expanding their driverless program to SF. Whether the grid is pre-mapped or not isn't particularly relevant. It's just how the technology works. The vehicles aren't driving on rails, they just have more semantic information about the world around them.