I believe you can sell them off the cars, you just need to re-register your cars with new plates. Not sure about your state rules but in WA pretty sure if your car is unlicensed and you want to get it licensed it has to go over the “Pits” for roadworthyness, and the mongrel licensing guys here in Perth always find something wrong with the car that has to be fixed before they’ll license it, thus forcing you to go over Pits again. Suggest you buy a set of new plates from your licensing dept for your cars before you sell the custom plates.
