NIO, the self-driving car company is doing this. They did a pretty detailed interview on their use case which includes a 120 PB data lake, and Cassandra, Kafka, TensorFlow, HDFS. You can read here: https://portworx.com/architects-corner-kubernetes-satya-koma... . (Disclosure, I work for Portworx the solution they use for container storage, but hopefully the content speaks for itself).