The Hanna-Barbera New Cartoon Series

Season 1, Episode 127

Episode Title: One Round Trip

Air Date: 1963-06-24

Overview:

Wally flees the zoo by using a inner-tube and his getaway in a baby carriage and rides off to a space shuttle where he gets blasted off in a rocket to a strange planet where two martians volunteer him to test their new experimental rocket and meets their leader who looks just like Wally himself.