Thought I'd share this story..... I was watching some G1 last night on the DVR with my 4yo son. We were watching Triple Takeover. All of a sudden when Prime transformed, he says to me, "Where did the trailer go?!" I laughed for a bit and and told him I didn't know. I thought it was funny that this question has been unanswered since the 1980s and all of a sudden, my 4yo picks up on it right away. LOLOL Then he was puzzled when it returned from off screen when Prime transformed again!
Probably one of the most amusing cases is when Prime transforms, drives offscreen, and the trailer rolls in from offscreen and hurries to catch up with him.