Two states tax some drivers by the mile. Many more want to give it a try
washingtonpost.com
washingtonpost.com
Distance traveled is still private information, so the Oregon rules called for it to be deleted after 30 days. I doubt it would suffice for privacy activists, but the ACLU was on board with it:
https://usa.streetsblog.org/2013/09/24/ten-questions-and-ans...
Apparently the average person pays 150-400 in gas taxes per year now. I guess the depreciation from mileage on car is of a similar order of magnitude. And we seem to do OK now: https://en.wikipedia.org/wiki/Odometer_fraud
(I'm sure people cheat on gas taxes, too.)