[AnthonyMouse]

In 1995 the California State Police were disbanded and their role was given to the California Highway Patrol.

The part of the DMV that performs driver testing isn't the part that loses all your data. It wouldn't be impossible to disband their IT department and give the role to some other government agency.

They could also just, you know, stop collecting it. Print your height and hair color etc. on your driver's license and don't store it anywhere else. Instead store a hash of it at the DMV with the salt stored on the license itself, so you can revalidate the license without being able to reconstitute it.