Is much known about the science behind Waymo? I am impressed that the cars can operate autonomously in real life when I see them around me. At the same time, they have an enormous number of sensors like multiple spinning LIDARs (?). I also read that they have to map everything ahead of time to be able to operate in an area. That seems a bit like cheating to me. It may work and may even be valuable to customers, but it doesn’t seem like as big a breakthrough as achieving autonomy with the same sensors as humans.