There is a product called Peeler by Kleanstrip that is designed to remove delamenating base coat clear coat but it won't remove the factory applied primer. You spray it on then let the top coat bubble then blow it off with an air hose.
I have always wanted to try it but never got around to it. Sounds like it might do one coat at a time. Disclaimer: If you try it and it eats down to bare metal....oops!