I think the Big Brother lobby would have a lot to say about this, and I would agree with them that its a step too far, although some people are happy to give up their rights for a few quid, by letting the insurance companies watch how they drive, with the installation of cameras in their car.
I saw a comment in a motoring magazine recently where the crashed car was taken away by the police, who used a particular machine, which could tell them, after it was plugged into the diagnostic system, what speed the car was doing, and previous top speeds, etc., along with a pile of other information. and all sorts of things. Just goes to show, we don't know half of what information is available.
The next step will be to measure the size of our nostrils, so they can charge us for what we breathe