I've used it on truck grill, center caps, wheels. Works great on some stuff. Covered interior chrome trim as well, shit was blinding when sun hit it.
Anything that gets wear it won't do well, I did a phone case.. And half a day of in and out of pocket it was worn off.
But had on grill for 1 yr, peeled outter ring off easily and looks good under. Did 7 light coats. Also did mirror on truck, one broke and dealer replaced, peeled off the other one to match. It got wear lines from when it was folded in.
Holds up to bugs and pressure washer good tho. Gas and brake kleen take it off like a champ too if u got it on too thin to peel.