States are free to implement whatever rules they like.So when will DEF fluid no longer me required in my Ram Cummins and when can a dealer legally pull all that "regen" Cummins smothering EPA junk off my truck so my engine can do what it was designed to do?
And will I be able to move to a State of my choosing with out the worry of my Harley exhaust being sniffed so I can renew my tag?
I take it you have never seen the Southpark Harley episode.