Google Maps uses machine learning algorithms to predict frequent locations and ETA times for users of the service. These articles go in-depth on how Google Maps uses machine learning to improve its efficiency.
https://www.springboard.com/blog/ai-machine-learning/machine-learning-google-maps/#:~:text=Google%20Maps%20will%20has%20predictive,in%20hundreds%20of%20cities%20worldwide.
https://www.theverge.com/2020/9/3/21419632/how-google-maps-predicts-traffic-eta-ai-machine-learning-deepmind
https://www.technologyreview.com/2021/06/23/1026653/using-machine-learning-to-build-maps-that-give-smarter-driving-advice/