Looks beautiful. We use the metalizer finishes on model planes. Main issues(s) with the stuff is durability. I'm not sure how well the finish will hold up to handling. Static model planes aren't usually picked up and moved around and some of the sealers used to protect the metal finish can also discolor over time. They can also become the subject of wear issues from handling.
I do appreciate your sharing the technique and it does look great. I hope the cars hold up to real world use. Good luck.
