Cruise (now part of GM) also relies heavily on maps, based on a talk I saw their lead CV guy make. It does make a good deal of sense - maps (at least street-maps) are mostly static and they make the problem way easier, so why not use them. In fact, most people these days are implicitly using maps - how often do people drive to new places without GPS navigation? Of course, vision and likely ML are still a necessary part of the equation.