Tangent -- there is a significant point in your post -- but its almost lost
Since Boston is part of a "Virtual City-State" whose outermost boundaries include ME, NH, VT, CT, RI -- there are going to be a lot of regular users of our highways and core roads who are not touchable by an odometer tax
Further we get quite a few trucks and a few buses coming into the Boston Area whose "home-port" is in Canada
I'm not a big fan of government surveillance -- yet RFID Transponders which are only interrogated by overhead gantries at definite locations on highways relatively a minor intrusion.
Far more intrusive are electronics in a box which keep an archive of everywhere you've gone during last year and which is downloaded when you have your car inspected
and of course there is already the capability of the government monitoring your location via your cellphone "heartbeat"
At some point we [as in the citizens of the free world] need to have a searching discussion of surveillance by the private sector and the government. Of particular concern is the use of the private sector's ability to collect data [e.g. Verizon -- can you hear me, corporate surveillance cameras, Ring, etc.] which can then be co-opted by the Government for its own purposes [whether official or "unofficial"]