That Yes ad raises more questions than it answers. What constitutes mechanical data? Does it include timestamps of when the engine was running and for how long? Is location data explicitly excluded? What about data that could be used to infer location, like vibration sensors picking up pothole impacts or gravel roads?

It seems simpler to just say: "This bill gives you, the owner of the vehicle, the right to give access to your car's data (that the automobile manufacturers are already collecting with little oversight into how it is used) to a third party mechanic of your choice for a limited time. It does not make this data available to literally anyone who wants it."

(The "for a limited time" concept does appear in the actual text of the bill in section 3 [1].)

[1] https://ballotpedia.org/Massachusetts_Question_1,_%22Right_t...