So is CVT transmission but I see it all the time."VIN number" is redundant.
I think he should join the National Federation of Associations, too! About that missing VI Number (that might be the correct way to term it, but it looks silly), I wonder who's wearing it now? I once had an antique car and the engine number had been clearly altered.I know someone that once worked in the Department of Redundancy Department in a U.S. Government Agency.