Waymo has been at the forefront of cutting edge AI/ML since the beginning: https://waymo.com/research/

This is a good read: https://www.understandingai.org/p/elon-musk-wants-to-dominat...

This talk by Waymo co-CEO is even better (especially from 33:50): https://www.youtube.com/watch?v=s_wGhKBjH_U