ANSWER: Ford Thunderbirds built before 1958 did not have a back seat. Some have guessed that the double-feature wouldn’t have been over by 11pm, and this might well have been the case (especially in the summer, when drive-in theatres were more popular), HOWEVER, the gent made it obvious that neither he nor his companion were paying any attention at all to the movie that was playing, so the curfew would have affected them either way.