I couldn't resist passing along this image from the Modern Mechanix blog. I'm not sure who runs it, but they've got a heck of an archive, and they post excerpts from old magazines, showing us "Yesterday's Tomorrow, Today."
This particular photo and article is from Popular Science, circa 1934.
What a lucky woman, to be able to give herself gas...
(and don't worry, Modern Mechanix isn't always about fart jokes)