Have you ever seen any Dart, Valiant, Demon or Duster with a rear window defroster?

I've got a couple of factory rear defogger option kits for a '66 Barracuda. Another I got out of a '65, so, not sure how early they started. Anyone else with a '64-6 Barracuda (or any other '66 and earlier A-body) with rear defog? Seems to be a fairly rare option back then.....at least around here in Sun Diego. :lol: