"Trail of the Rocket" is a 1951 promo film for Oldsmobile's new "rocket" engine. Johnny and his singing partner Lucille, whose show just happens to be sponsored by Olds, are invited on a factory tour. But before they get there, Johnny snoops around his friend's laboratory, where he's experimenting with interplanetary TV signals. Before you can say "don't touch that," Johnny discovers a pair of Martians (resembling Fred Mertz and Mr. Peepers) planning a visit to earth. Click through to learn what Martians hate most about earthling culture.