Preface: The traditional method of disposing of hard drives is degaussing or incineration.

Headline News: The manufacturer has a hardware disposal policy. The incidents encountered by Tesla may be due to improper handling of third parties. For more information about headline news, please refer to this link. https://www.hackread.com/user-data-found-in-tesla-car-parts-ebay/

Supplement: Should you have doubt about your data personal privacy matter in IoT device? You might have interested to read the following.

Who can you trust in the Internet world? Security Issues with LOAD DATA LOCAL in MySQL DB.

Technical overview:
Security Issues with LOAD DATA LOCAL on MySQL DB server side:
Such a server could access any file on the client host to which the client user has read access. Please refer to this link to read the details – http://www.antihackingonline.com/application-development/who-can-you-trust-in-the-internet-world-security-issues-with-load-data-local-in-mysql-db/

Official announcement – Security Considerations for LOAD DATA LOCAL. Please refer to this URL: https://dev.mysql.com/doc/refman/8.0/en/load-data-local-security.html