Within a year or less after the first ones go online, there will be a way to disable them.
I'll have my popcorn ready for the first court case where the Gubmint tries to sue or prosecute such an individual who disables The Box on his new GM or Chrysler Turd Coupé
You don’t think its Fascism yet? They can enforce any law as hard as they want to.
“A thing that can be done, can be undone.”
You can make this be central to the car OS, like Internet Explorer was central to Windows 98. Disable it, and no sperk to the plugs.
A whole new OS will be needed, there is now a market for new ASICS to run cars!