Does anyone know anything about these cars? The 4 big ones. I have no idea what the little black rod sticking up from the hoods are for. No name anywhere on them that I can see. I'm sure they are Cadillacs. The green ones look to be Mercurys and all that's on them is JVZ Co. And the multi colored ones say F&F Mold and Die Works, Inc. Dayton, Ohio.