Volkswagen left telemetry from 800,000 electric vehicles on an open S3 bucket. In 466k cases — including the entire fleet of the Hamburg police — it was possible to reconstruct the detailed movements of every vehicle and connect that with the identity of the owner.
Update: See replies. Not an open S3 bucket but AWS key dumped out of JVM.
https://www.carscoops.com/2024/12/vw-group-data-breach-exposed-location-info-for-800000-evs/