Quote:
In the Osmonds special, you see the Doom Buggies go by the mirrors, but with no HHGs
Yeah, that came up in the original discussion too, but the consensus was that it didn't mean anything. The Osmonds show aired in March 1970 and everyone is wearing sweaters and jackets, and many trees on Main Street look bare, so the show was probably filmed in late winter, maybe a month or two before it aired. Most likely, 1970ish TV cameras just couldn't pick up the ghost effect.