Your hypothetical is pretty far-fetched. This isn't access to an external database that allows private information to be accessed by anyone. This is only mechanical data transferred to and from the vehicle in question, only after permission is granted. From the information on the ballot:

"

With vehicle owner authorization, independent repair facilities (those not affiliated with a manufacturer) and independent dealerships would be able to retrieve mechanical data from, and send commands to, the vehicle for repair, maintenance, and diagnostic testing."

Ballot Information

This doesn't include a database hosted on a server somewhere. This is only between the car and the diagnostic device, and only after authorization. The auto industry is trying to push this as a privacy concern, and even went so far as to create a dark TV ad of a woman being in danger of being attacked because her personal information was accessed. This is entirely untrue, because these systems will only have mechanical data.

Thanks for writing this. I'm an avid cyclist and have been for over 25 years, and I rarely realize how much I take my ability to do the simple things for granted. I'm really happy you've regained the mobility to enjoy life more. It's given me a "realize and shift" moment as well as enabled me to rethink my one-sided (and admittedly somewhat childish) visions of where these types of medical advancements might take us.

Don't you mean "...but a great day for everyone everywhere" ?