Comment by repiret

Periodic vehicle inspection for emissions and safety compliance. Many jurisdictions already have this for gas engine emissions, a handful of states already have safety inspections. Done right, it can be low burden and low cost, and basically put an end to Def deletion. Done poorly it's grift to the shops that do the inspections, and an economically external annoyance to vehicle owners, and unnecessarily limits the ability of people to tinker with their own vehicles.