Last time I was trying to sell my Tesla, I used factory reset, entered credentials, the car rebooted, data still fully here. Tried again multiple times. Nothing

Last time I was trying to sell my Tesla, I used factory reset, entered credentials, the car rebooted, data still fully here. Tried again multiple times. Nothing happened. I don’t think that functionality is tested properly even for the basic erasure that you can visually confirm, let alone properly wiping the storage. If someone is reading this at Tesla, you should encrypt storage and destroy the key on reset.