Help identify an episode where he makes toy cars out of cardboard boxes.

[PaulKTF]

Hi everyone,

My memory is recalling that there was an episode from the early to mid 1980's where the craft activity was Mister Rogers making cars out of cardboard boxes (I think they were smaller ones).

Does anyone know what episode this was, and if it's available on Amazon Instant Video or DVD?

Of course it's entirely possible that I'm misremembering and no such craft segment/episode exists.
Thanks!