They may very well do that eventually, but it’s not in the spec now. People have been watching this sort of stuff for just this reason. Any makes that do record that data have different and very proprietary tools to pull the data with and they are emphatically not compatible with each other - yet.
In fact, it’s gotten so bad that many independent shops are complaining about the dozens of thousands of dollars they have to spend on new diagnostic gear every time someone releases a new generation of cars. The Ford VCM diagnostic kit, for example, is $5K for the very basic hardware, but it’s well over $12K for one that can do most things you’d want PLUS the annual subscription. BMW’s DME-compatible gear is even worse - you used to be able to buy a house for what they want for that thing. VW has a cheap and easy one that’s just a simple cable to your computer, though. Point is there’s no unified standard for this stuff yet and there’s no way in hell the government will be able to get your existing car to rat on you at the gas station using its existing computer. Easier to just use a GPS/RFID box for existing cars and decree a new standard for future vehicles.
for the tech it sucks still, equipment wise...but im almost glad that they [manufacturers] are still greedy cpitalists and protecting their shops and revenues...
appreciate the feedback sir, i can loosen the velcro a bit on my tinfoil...for a minute...