Thanks -- that answers the question! So fair to say that it's impressive because of the absence of LIDAR and/or other sensors -- and that by adding LIDAR to such a system one could presumably get towards 0% manual intervention?
The difference between 98% and 99.999% is very difficult to solve, and it's not going to happen in the next 5 years. LIDAR can't help, for example, with obeying a police officer gesture.